{"id":730056,"date":"2018-04-10T03:35:31","date_gmt":"2018-04-10T03:35:31","guid":{"rendered":"https:\/\/www.questionpro.com\/blog\/%e8%aa%a4%e5%b7%ae%e3%81%ae%e7%af%84%e5%9b%b2%e3%81%a8%e3%81%af-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%81%a8%e4%be%8b\/"},"modified":"2018-04-10T03:35:31","modified_gmt":"2018-04-10T03:35:31","slug":"%e8%aa%a4%e5%b7%ae%e3%81%ae%e7%af%84%e5%9b%b2%e3%81%a8%e3%81%af-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%81%a8%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.questionpro.com\/blog\/ja\/%e8%aa%a4%e5%b7%ae%e3%81%ae%e7%af%84%e5%9b%b2%e3%81%a8%e3%81%af-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%81%a8%e4%be%8b\/","title":{"rendered":"\u8aa4\u5dee\u306e\u7bc4\u56f2\u3068\u306f &#8211; \u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3068\u4f8b"},"content":{"rendered":"<h2>\u8aa4\u5dee\u306e\u7bc4\u56f2<\/h2>\n<p><strong> \u5b9a\u7fa9\u3059\u308b\u3002<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">\u8aa4\u5dee\u3068\u306f\u3001\u7d71\u8a08\u5b66\u306b\u304a\u3044\u3066\u3001\u7121\u4f5c\u70ba\u62bd\u51fa\u306e\u7d50\u679c\u304b\u3089\u5f97\u3089\u308c\u308b\u8aa4\u5dee\u306e\u7a0b\u5ea6\u3092\u3044\u3046\u3002 <\/span><a href=\"https:\/\/www.questionpro.com\/blog\/simple-random-sampling\/\"><br \/>\n  <span style=\"font-weight: 400;\">\u30e9\u30f3\u30c0\u30e0\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0<\/span><br \/>\n<\/a><span style=\"font-weight: 400;\"> \u306e\u30a2\u30f3\u30b1\u30fc\u30c8\u3092\u5b9f\u65bd\u3057\u307e\u3057\u305f\u3002 \u7d71\u8a08\u306e\u8aa4\u5dee\u304c\u5927\u304d\u3044\u3068\u3001\u305d\u306e\u7d50\u679c\u306b\u4f9d\u5b58\u3059\u308b\u53ef\u80fd\u6027\u304c\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002  <\/span><a href=\"https:\/\/www.questionpro.com\/blog\/surveys\/\"><br \/>\n  <span style=\"font-weight: 400;\">\u30a2\u30f3\u30b1\u30fc\u30c8<\/span><br \/>\n<\/a><span style=\"font-weight: 400;\">\u307e\u305f\u306f <\/span><a href=\"https:\/\/www.questionpro.com\/online-polls.html\"><br \/>\n  <span style=\"font-weight: 400;\">\u30dd\u30fc\u30eb<\/span><br \/>\n<\/a><span style=\"font-weight: 400;\">\u3064\u307e\u308a\u3001\u6bcd\u96c6\u56e3\u3092\u4ee3\u8868\u3059\u308b\u3088\u3046\u306a\u7d50\u679c\u306b\u5bfe\u3059\u308b\u4fe1\u983c\u5ea6\u306f\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002 \u306b\u304a\u3044\u3066\u3001\u975e\u5e38\u306b\u91cd\u8981\u306a\u30c4\u30fc\u30eb\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002  <\/span><a href=\"https:\/\/www.questionpro.com\/market-research.html\"><br \/>\n  <span style=\"font-weight: 400;\">\u5e02\u5834\u8abf\u67fb<\/span><br \/>\n<\/a><span style=\"font-weight: 400;\">\u8abf\u67fb\u54e1\u304c\u8abf\u67fb\u304b\u3089\u5f97\u3089\u308c\u308b\u30c7\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u6301\u3064\u3079\u304d\u4fe1\u983c\u5ea6\u3092\u793a\u3059\u3082\u306e\u3067\u3042\u308b\u305f\u3081\u3002 <\/span> <\/p>\n<p><span style=\"font-weight: 400;\">\u4fe1\u983c\u533a\u9593\u3068\u306f\u3001\u7279\u5b9a\u306e\u7d71\u8a08\u91cf\u306b\u3064\u3044\u3066\u4e88\u6e2c\u4e0d\u53ef\u80fd\u306a\u30ec\u30d9\u30eb\u306e\u3053\u3068\u3067\u3042\u308b\u3002 \u901a\u5e38\u3001\u8aa4\u5dee\u306e\u7bc4\u56f2\u3068\u95a2\u9023\u4ed8\u3051\u3066\u4f7f\u308f\u308c\u3001\u30aa\u30f3\u30e9\u30a4\u30f3\u8abf\u67fb\u3084\u30aa\u30f3\u30e9\u30a4\u30f3\u6295\u7968\u306e\u7d50\u679c\u304c\u6bcd\u96c6\u56e3\u5168\u4f53\u3092\u4ee3\u8868\u3059\u308b\u306e\u306b\u5024\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u7d71\u8a08\u5b66\u8005\u304c\u5224\u65ad\u3059\u308b\u969b\u306e\u4fe1\u983c\u6027\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u3082\u306e\u3067\u3059\u3002  <\/span><\/p>\n<p style=\"text-align: center;\"><strong><i>\u8aa4\u5dee\u304c\u5c0f\u3055\u3044\u307b\u3069\u3001\u7d50\u679c\u306e\u4fe1\u983c\u5ea6\u304c\u9ad8\u3044\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/i><\/strong><\/p>\n<p>\u6bcd\u96c6\u56e3\u3092\u63a8\u5b9a\u3059\u308b\u305f\u3081\u306b\u4ee3\u8868\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u3092\u9078\u629e\u3059\u308b\u3068\u304d\u3001\u305d\u3053\u306b\u306f\u4f55\u3089\u304b\u306e\u4e0d\u78ba\u5b9f\u6027\u304c\u4f34\u3046\u3082\u306e\u3067\u3059\u3002 \u6a19\u672c\u7d71\u8a08\u91cf\u304b\u3089\u5b9f\u7d71\u8a08\u91cf\u3092\u63a8\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002 \u3064\u307e\u308a\u3001\u79c1\u305f\u3061\u306e\u898b\u7a4d\u3082\u308a\u306f\u5b9f\u969b\u306e\u6570\u5024\u306b\u8fd1\u3044\u3082\u306e\u306b\u306a\u308b\u306e\u3067\u3059\u3002 \u8aa4\u5dee\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u3053\u306e\u63a8\u5b9a\u5024\u306f\u3055\u3089\u306b\u6539\u5584\u3055\u308c\u308b\u3002<\/p>\n<h2><b>\u30de\u30fc\u30b8\u30f3\u30aa\u30d6\u30a8\u30e9\u30fc\u306e\u8a08\u7b97<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u8aa4\u5dee\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u6bcd\u96c6\u56e3\u304c\u660e\u78ba\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u524d\u63d0\u3067\u3059\u3002 \u7d71\u8a08\u5b66\u3067\u306f\u3001\u300c\u6bcd\u96c6\u56e3\u300d\u306f\u3001\u7814\u7a76\u8005\u304c\u8abf\u67fb\u3057\u30c7\u30fc\u30bf\u3092\u53ce\u96c6\u3057\u3088\u3046\u3068\u3059\u308b\u7279\u5b9a\u306e\u96c6\u56e3\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002 \u3053\u306e\u8aa4\u5dee\u306f\u3001\u6bcd\u96c6\u56e3\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3084\u3001\u30b5\u30f3\u30d7\u30eb\u62bd\u51fa\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u9069\u5207\u306b\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u8457\u3057\u304f\u5927\u304d\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u7d71\u8a08\u8abf\u67fb\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u5fc5\u305a\u8aa4\u5dee\u306e\u8a08\u7b97\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002 \u6a19\u672c\u306e\u8aa4\u5dee\u306e\u666e\u904d\u7684\u306a\u516c\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\"><img decoding=\"async\" class=\"alignleft wp-image-56045\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2018\/04\/Margin-of-Error-formula.jpg\" alt=\"\u30de\u30fc\u30b8\u30f3\u30aa\u30d6\u30a8\u30e9\u30fc\u306e\u516c\u5f0f\" width=\"200\" height=\"105\"><br \/>\n<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u306e\u3068\u3053\u308d\u3067\u3059\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img decoding=\"async\" class=\" wp-image-56046 alignleft\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2018\/04\/p.png\" alt=\"p hat - \u8aa4\u5dee\u306e\u7bc4\u56f2\" width=\"11\" height=\"22\">= \u6a19\u672c\u5272\u5408(&#8220;P-hat&#8221;)\u3002<\/span><\/p>\n<p><span style=\"font-weight: 400;\">n = \u30b5\u30f3\u30d7\u30eb\u6570<\/span><\/p>\n<p><span style=\"font-weight: 400;\">z = z-score\u306f\u3001\u3054\u5e0c\u671b\u306e\u4fe1\u983c\u6c34\u6e96\u306b\u5bfe\u5fdc\u3057\u307e\u3059\u3002<\/span><\/p>\n<p>\u5c11\u3057\u6238\u60d1\u3044\u3092\u611f\u3058\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f \u3054\u5b89\u5fc3\u304f\u3060\u3055\u3044\uff01<a href=\"https:\/\/www.questionpro.com\/margin-of-error-calculator\/\">\u8aa4\u5dee\u306e\u8a08\u7b97\u3092<\/a>\u3054\u5229\u7528\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<h3><b>\u8aa4\u5dee\u306e\u8a08\u7b97\u306e\u4f8b  <\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u4f8b\u3048\u3070\u3001\u30d6\u30c9\u30a6\u5712\u3067\u884c\u308f\u308c\u308b\u30ef\u30a4\u30f3\u306e\u8a66\u98f2\u4f1a\u306f\u3001\u305d\u306e\u5834\u3067\u7d39\u4ecb\u3055\u308c\u308b\u30ef\u30a4\u30f3\u306e\u54c1\u8cea\u3084\u5473\u306b\u5de6\u53f3\u3055\u308c\u307e\u3059\u3002 \u3053\u308c\u3089\u306e\u30ef\u30a4\u30f3\u306f\u751f\u7523\u5168\u4f53\u3092\u4ee3\u8868\u3059\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u6765\u5834\u8005\u306e\u8a55\u5224\u6b21\u7b2c\u3067\u3001\u305d\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u304c\u751f\u7523\u5168\u4f53\u306b\u4e00\u822c\u5316\u3055\u308c\u308b\u306e\u3067\u3059\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30ef\u30a4\u30f3\u306e\u8a66\u98f2\u306f\u3001\u6765\u5834\u8005\u304c\u30d1\u30bf\u30fc\u30f3\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u3001\u3064\u307e\u308a\u30e9\u30f3\u30c0\u30e0\u306b\u9078\u3070\u308c\u3066\u521d\u3081\u3066\u52b9\u679c\u3092\u767a\u63ee\u3059\u308b\u306e\u3067\u3059\u3002 \u30ef\u30a4\u30f3\u304c\u7f8e\u5473\u3057\u304f\u98f2\u3081\u308b\u3088\u3046\u306b\u306a\u308b\u306b\u306f\u3001\u30d7\u30ed\u30bb\u30b9\u3092\u7d4c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u308c\u3068\u540c\u3058\u3088\u3046\u306b\u3001\u6765\u5834\u8005\u3082\u52b9\u679c\u7684\u306a\u7d50\u679c\u3092\u51fa\u3059\u305f\u3081\u306b\u30d7\u30ed\u30bb\u30b9\u3092\u7d4c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u305d\u306e\u30ef\u30a4\u30f3\u30dc\u30c8\u30eb\u304c\u3001\u30ef\u30a4\u30ca\u30ea\u30fc\u5168\u4f53\u306e\u751f\u7523\u91cf\u3092\u8868\u3059\u306b\u3075\u3055\u308f\u3057\u3044\u304b\u3069\u3046\u304b\u3001\u6e2c\u5b9a\u9805\u76ee\u306b\u3088\u3063\u3066\u8a3c\u660e\u3055\u308c\u308b\u306e\u3067\u3059\u3002 \u7d71\u8a08\u5b66\u8005\u304c\u3001\u5b9f\u65bd\u3057\u305f\u8abf\u67fb\u306e\u8aa4\u5dee\u306f\u4fe1\u983c\u533a\u959393%\u3067\u30d7\u30e9\u30b9\u30de\u30a4\u30ca\u30b95%\u3067\u3042\u308b\u3068\u8ff0\u3079\u305f\u5834\u5408\u3002 \u3068\u3044\u3046\u3053\u3068\u306f\u3001\u3082\u3057  <\/span><span style=\"font-weight: 400;\">\u30a2\u30f3\u30b1\u30fc\u30c8<\/span><span style=\"font-weight: 400;\">\u3092100\u56de\u5b9f\u65bd\u3057\u305f\u5834\u5408\u3001100\u56de\u4e2d93\u56de\u3092\u5360\u3081\u305f\u5272\u5408\u3068\u3001\u305d\u308c\u4ee5\u4e0b\u306e\u5272\u5408\u3067\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u304c\u3042\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002 <\/span> <\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u5834\u5408\u300160\u4eba\u306e\u6765\u5834\u8005\u304c\u300c\u30ef\u30a4\u30f3\u304c\u975e\u5e38\u306b\u304a\u3044\u3057\u304b\u3063\u305f\u300d\u3068\u5831\u544a\u3057\u305f\u5834\u5408\u3002 \u4fe1\u983c\u533a\u9593\u306e\u8aa4\u5dee\u306f\u30d7\u30e9\u30b9\u30de\u30a4\u30ca\u30b95\uff05\u306793\uff05\u306a\u306e\u3067\u3001100\u4eba\u306e\u6765\u5834\u8005\u306e\u3046\u3061\u3001\u300c\u975e\u5e38\u306b\u7f8e\u5473\u3057\u304b\u3063\u305f\u300d\u3068\u30b3\u30e1\u30f3\u30c8\u3059\u308b\u6765\u5834\u8005\u306f55\u300165\u4eba\uff0893\uff05\uff09\u3068\u5224\u65ad\u3057\u3066\u3088\u3044\u3060\u308d\u3046\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u30dc\u30e9\u30f3\u30c6\u30a3\u30a2\u306b\u95a2\u3059\u308b\u30a2\u30f3\u30b1\u30fc\u30c8\u30921000\u4eba\u306b\u9001\u3063\u305f\u3068\u3053\u308d\u3001500\u4eba\u304c\u300c\u30dc\u30e9\u30f3\u30c6\u30a3\u30a2\u306f\u4eba\u751f\u3092\u8c4a\u304b\u306b\u3059\u308b\u300d\u3068\u3044\u3046\u30a2\u30f3\u30b1\u30fc\u30c8\u306e\u6587\u8a00\u306b\u540c\u610f\u3057\u305f\u3068\u3044\u3046\u4f8b\u3092\u6319\u3052\u3066\u3001\u3055\u3089\u306b\u8aac\u660e\u3057\u307e\u3057\u3087\u3046\u3002 \u4fe1\u983c\u5ea695%\u306e\u5834\u5408\u306e\u8aa4\u5dee\u3092\u8a08\u7b97\u3059\u308b\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>\u30b9\u30c6\u30c3\u30d7 1:<\/strong>\u8abf\u67fb\u7968\u306e\u8a18\u8ff0\u306b\u540c\u610f\u3057\u305f\u56de\u7b54\u8005\u306e\u6570\u3092\u56de\u7b54\u8005\u7dcf\u6570\u3067\u5272\u3063\u3066 P-hat \u3092\u7b97\u51fa\u3059\u308b\u3002 \u3053\u306e\u5834\u5408  <\/span><span style=\"font-weight: 400;\">= 500\/1000 = 50%<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>\u30b9\u30c6\u30c3\u30d72\uff1a<\/strong>95\uff05\u4fe1\u983c\u6c34\u6e96\u306b\u5bfe\u5fdc\u3059\u308bz\u30b9\u30b3\u30a2\u3092\u6c42\u3081\u308b\u3002 \u3053\u306e\u5834\u5408\u3001z\u30b9\u30b3\u30a2\u306f1.96\u3068\u306a\u308b<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>\u30b9\u30c6\u30c3\u30d73\uff1a<\/strong>\u3053\u308c\u3089\u306e\u5024\u3092\u5f0f\u306b\u5165\u308c\u3066\u8a08\u7b97\u3059\u308b  <\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong>\u30b9\u30c6\u30c3\u30d74\uff1a<\/strong>\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u306b\u5909\u63db\u3059\u308b<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-56042\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2018\/04\/Margin-or-error-and-z-value.jpg\" alt=\"\u30a4\u30e1\u30fc\u30b8\" width=\"746\" height=\"314\"><\/p>\n<h3><b>\u30b5\u30f3\u30d7\u30eb\u6570\u306e\u8aa4\u5dee\u3002<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u3067<\/span> <a href=\"https:\/\/www.questionpro.com\/blog\/probability-sampling\/\"><br \/>\n  <span style=\"font-weight: 400;\">\u78ba\u7387\u7684\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0<\/span><br \/>\n<\/a><span style=\"font-weight: 400;\">\u306f\u3001\u6bcd\u96c6\u56e3\u306e\u5404\u30e1\u30f3\u30d0\u30fc\u304c\u30b5\u30f3\u30d7\u30eb\u306e\u4e00\u90e8\u3068\u3057\u3066\u9078\u629e\u3055\u308c\u308b\u78ba\u7387\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001\u7814\u7a76\u8005\u3084\u7d71\u8a08\u5b66\u8005\u304c\u81ea\u5206\u306e\u7814\u7a76\u9818\u57df\u304b\u3089\u30e1\u30f3\u30d0\u30fc\u3092\u9078\u3073\u3001\u3053\u308c\u3089\u306e\u30b5\u30f3\u30d7\u30eb\u304b\u3089\u53d7\u3051\u53d6\u3063\u305f\u30c7\u30fc\u30bf\u306e\u8aa4\u5dee\u3092\u53ef\u80fd\u306a\u9650\u308a\u5c0f\u3055\u304f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u975e\u78ba\u7387\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3067\u306f\u3001\u30b5\u30f3\u30d7\u30eb\u306f\u8cbb\u7528\u5bfe\u52b9\u679c\u3084\u5229\u4fbf\u6027\u306b\u57fa\u3065\u3044\u3066\u5f62\u6210\u3055\u308c\u307e\u3059\u3002 <\/span><a href=\"https:\/\/www.questionpro.com\/blog\/convenience-sampling\/\"><br \/>\n  <span style=\"font-weight: 400;\">\u5229\u4fbf\u6027<\/span><br \/>\n<\/a><span style=\"font-weight: 400;\"> \u307e\u305f\u3001\u3053\u306e\u3088\u3046\u306a\u9078\u8003\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u4e00\u90e8\u306e\u4eba\u3005\u304c\u6392\u9664\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002 \u30a2\u30f3\u30b1\u30fc\u30c8\u306f\u3001\u4f1a\u54e1\u306e\u8208\u5473\u3084\u7528\u9014\u306b\u5fdc\u3058\u3066\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u3067\u3001\u521d\u3081\u3066\u52b9\u679c\u3092\u767a\u63ee\u3059\u308b\u3082\u306e\u3067\u3059\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u4fe1\u983c\u5ea6\u306e\u696d\u754c\u6a19\u6e96\u306f95\uff05\u3067\u3042\u308a\u3001\u3053\u308c\u306f\u7279\u5b9a\u306e\u8abf\u67fb\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\u306b\u5bfe\u3059\u308b\u8aa4\u5dee\u306e\u5272\u5408\u3067\u3042\u308b\u3002  <\/span><\/p>\n<p><span style=\"font-weight: 400;\">  <img decoding=\"async\" class=\"aligncenter size-full wp-image-56041\" src=\"https:\/\/www.questionpro.com\/blog\/wp-content\/uploads\/2018\/04\/Margin-of-error-and-sample-size.jpg\" alt=\"\u8aa4\u5dee\u306e\u7bc4\u56f2\u3068\u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\" width=\"686\" height=\"674\"><\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u8868\u306b\u3042\u308b\u3088\u3046\u306b\u3001\u8aa4\u5dee\u3092\u534a\u5206\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u4f8b\u3048\u30704\u304b\u30892\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u30b5\u30f3\u30d7\u30eb\u6570\u3092500\u304b\u30892000\u3068\u5927\u5e45\u306b\u5897\u3084\u3057\u3066\u3044\u308b\u3002 \u304a\u6c17\u3065\u304d\u306e\u3088\u3046\u306b\u3001\u30b5\u30f3\u30d7\u30eb\u306e\u5927\u304d\u3055\u3068\u8aa4\u5dee\u306f\u53cd\u6bd4\u4f8b\u3057\u3066\u3044\u307e\u3059\u3002 \u30b5\u30f3\u30d7\u30eb\u30b5\u30a4\u30ba\u304c1500\u307e\u3067\u306f\u3001\u8aa4\u5dee\u304c\u5927\u304d\u304f\u6e1b\u5c11\u3059\u308b\u304c\u3001\u305d\u308c\u3092\u8d85\u3048\u308b\u3068\u6e1b\u5c11\u5e45\u304c\u5c0f\u3055\u304f\u306a\u308b\u3002  <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8aa4\u5dee\u306e\u7bc4\u56f2 \u5b9a\u7fa9\u3059\u308b\u3002 \u8aa4\u5dee\u3068\u306f\u3001\u7d71\u8a08\u5b66 [&hellip;]<\/p>\n","protected":false},"author":61,"featured_media":610556,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1115],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ 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class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.questionpro.com\/blog\/ja\/%e8%aa%a4%e5%b7%ae%e3%81%ae%e7%af%84%e5%9b%b2%e3%81%a8%e3%81%af-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%81%a8%e4%be%8b\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.questionpro.com\/blog\/ja\/%e8%aa%a4%e5%b7%ae%e3%81%ae%e7%af%84%e5%9b%b2%e3%81%a8%e3%81%af-%e5%ae%9a%e7%be%a9%e3%80%81%e8%a8%88%e7%ae%97%e6%96%b9%e6%b3%95%e3%81%a8%e4%be%8b\/\"},\"author\":{\"name\":\"Anup Surendran\",\"@id\":\"https:\/\/www.questionpro.com\/blog\/ja\/#\/schema\/person\/e684f5b706a71ab8ac636fe2939d8cea\"},\"headline\":\"\u8aa4\u5dee\u306e\u7bc4\u56f2\u3068\u306f &#8211; 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