数学検定準２級の過去問です。解き方が解らないので解説、解答お願いします！
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有難うございます！ 返信遅れてすみません(>_<) 助かりました
เมื่อดูคำถามนี้แล้ว ก็จะเจอคำถามเหล่านี้ด้วย😉
![統計学実践ワークブック準1級 第27章 時系列解析 問27.1[1]について教えてください... - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1620224/thumb_l_webp_17086893672060.webp?Expires=1775106292&Signature=CeI9uvJlJ7jiFBEdCv4eBU-2KlU3OaX63~WIKpTrlqmAyFSIx0of2ha1DbvOIiilqPSbyKTEMrllxIcil0zr83B30y5P7TQ4k1POElAb9Tyfnik6HZSv6P~01UWu3hUGkIy3h37hmcEBC7Ol2hsLDOiUAJQCOETQ5Y85wphRGz3QubVLfsvyPYG87rEequx9FnRrV5sU1eqkl1ZFWQ-qCjluvSsHywi4tbbnPzvZX0xCCma-bTKhnxc2lVnff0bBG0BdsGhDgYFpG9eUSfoI9n6aI-H7P5Zvk-e-EgFO3efVsFDVVdkqYgRVyocCFfjwrkVFn1LBVq4BrQi9~Ltk1w__&Key-Pair-Id=K2W722D70GJS8W&Expires=1775106292&Signature=dnn9brNrZ9TMwYo75RYICbnFdVrWko9gicPeCl1uFM0GiMo~aKsgJvVP58~Z05sO5-GlLPmToN0jsq4ZDdPKzonlsv7lMpGnA89ee1USInetzv5Y1MXLoBiW3w3KEkgxGytZg-0tb~NteeRLSGADduFXW2mkuE5PnyR4IuKvVKnDNfZc2o1xSTiLj4JcznKZOzVJ5MhEaSKQt4Xhd1PKDrID6aLit7R9I4FXTZi7HxTo9Lc9JR3gvT5QwM-viDl3vkO-Rvn0FitbiBBbNKzXxfHkHy59UgU3WEL7g7B5zzjSTDjardXRLldV7KY1uEVyVvYf7wh7s7pLik7hl-1JSQ__&Key-Pair-Id=K2W722D70GJS8W)
![統計学実践ワークブック準1級 第27章 時系列解析 問27.1[1]について教えてください... - 2](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1620225/thumb_l_webp_17086893673710.webp?Expires=1775106292&Signature=SxhduKbXuXAOjaY8DyTIY8DVL2llLNnjew0RndnOqq-uiAJh0S6Sq-tKTRjq7D~HH9fTzAdeF3VGrG9RO0WsRImGudAS8QrV5-K6RfdCnlFLWBJrjS2BB20AoaekOFK6EidrP3ZCDhoOzyIY6-h4Gieb~SqqxNNlou3g9zpen-k5OYxoUZ2LDAKK6dAqf7B3GpMODUaLu-afZOfT7q0E-Z7pcQsWs8yCyHmmpRaPSKyfKL96mH8Z0Js-Og-JUtO81-IB0tDy2qn7FE6B~kmgsoIKZfGL2k~Yi3DiKo-bfDpX9jYlVza9W6UhkxAiJul7ZZLCv79ttCU53btgX~jlJw__&Key-Pair-Id=K2W722D70GJS8W&Expires=1775106292&Signature=J7hU83j~UIRLn7U1W7fi-DVKOkZUCCMy5141HB6Q7TvattaKLbQ2XevZbHh3-kUcEq2pMy4U144eVIDTsKtF0DHUnjNLJBVm-SXJqOtZmJ9jP10sXAZo67jiXiNPc-uXvmZ9flw-uol7q700aIuYOmUUk0UdeHEIoK6rz1ysAwS-d60xXnRBK6x52nyRk8Bq7883J0~Vq9MV5yrrnSffhGLX6tLe-hnaw-EWDmMU~mtL~HpBHTS-eQRTniB0RMdvhQwBeBHEN6vviVTPUsiqpa8dVIJXcsNYmYeZ1aeVY5HEH1MYZfS5R2jf5J3rGvbTxw7tpIxTD212HFZ22aWpYg__&Key-Pair-Id=K2W722D70GJS8W)
![統計学実践ワークブック準1級 第27章 時系列解析 問27.1[1]について教えてください... - 3](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1620226/thumb_l_webp_17086893674000.webp?Expires=1775106292&Signature=x7V3QQjq8aqiCFgC0CImewLj5DJysu-Wd7bIN39bma3aFDDaqKod2xj5mEsDHNMFlTUxryQ5Z7XHaT2hQ2c-lYX8soe1bd96gBfwF8yi9XYONpq3ZdNLkeT48AtPa7eEl~hsRV2t1GdFcHaL5080pOaa8QDiBrqylVDmfrFOXSSeQ3u-4OI9DI0hpYgjN8mP-N0Uq2oZHnq4KPHdo8UDYvoxou~SW5zab4uMbo4VmLmrgTZXa9kbSuO4skPKSEya6Huys8DJYPjoiomQJ2dsZM87RVebyaXxrSpuyzv6yYXEcjl~6AYg~KV8dCs2Nua7~LCmCl-CMNGMVwN4o8vPvg__&Key-Pair-Id=K2W722D70GJS8W&Expires=1775106292&Signature=AOH8pUMD5YoYPrqIMP5hVhmlOWYAvx7KqMe~s4Pu35I0OB3UAjvoVeEjrWoA6zOebTbWJ3sf8pyC5c-4YbgQuWhel-F4yf-ET8Kd~ldv17vEJodWi6J-u~J9hRBBx8Z8Kq5KWGxXd0lQaW1m6hh~gA5oOzXo7u7ubfJUDOQhG~3FrfSX-Uj-5G7W4xUanHRchqMeLeHksqdLWZ3dzmKGAD7bv88~ZaTQRWOtb88fyQDmsS2zGT75yfbPEQ8v25FfHQQVneXn2inyV9-ebHEO13P4b~pbJpz3mBPhhk6pnZ8pc2uF0Dkz16rkOcBsd5KEvcTZr6CuD9ct7JAnMbrfoA__&Key-Pair-Id=K2W722D70GJS8W)
![統計検定準1級2021年6月の問6です。
[1]の解説で、1行目から2行目に変形できるのは... - 1](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1618287/thumb_l_webp_17082553992390.webp?Expires=1775106292&Signature=IcHFi4nUueI5f1CjOMNTzmfAWFow5S7E8o7OZqhShzwKrcHzsxrPG6QgX47iR~owN1q-p1LmUBWNJqHuVtGLls8Xlz~wKMTu0xd5vIAgjFYL7N6dAE37Vlv5SS8UdILfoQ0ITSejTueWIH0emY347Yw-Jo0a~w1ddbARzHWbQ9RHvZgZ61A2RZBZQLsHzv0xLWzkh4mLgf9QhR~ZsONLnKunzRJscjNrBvS2IFkm~VGAGnKRFBc~BIhxHnuF00ilbHvcZp5kJsZCL9orVywvxX-E0zJfSIJ5Sup6cHvASRzHChcR38dl5CsFH~RqVTWwopJt37-731mhbFrsBxRoHg__&Key-Pair-Id=K2W722D70GJS8W&Expires=1775106292&Signature=UH7wFrerrlUFVqzIO-qoB020S6B0jOc4XCD~3G8w3bu3hB~QYAFHlWXCTt0Hwtm8zhtmkwrb2X~OqzOgGBOA9eg-QdoECZdeSCdzUFln4PdZcu3nGtasY8adgmjOvqd-lpnHdxHo~8QaQBt8ZW~0jTZKm6jF5gnPOgD~6SCQBUQLbBZ7LfCvetPMsXMPlV70sHQyv5UNyFXu4EJyDykSRhuUQv~zzv~c0JktFx1aMxUIeV-5vAkDoHbUH3owXo6zmZ4QNDKSQNy2lkXdMeqmIdsbRE5D1z8RalY365Jvn5BcMiL0wwulvJT5mptvA8OXqoU7vGsF5bqybJMRZmlD8Q__&Key-Pair-Id=K2W722D70GJS8W)
![統計検定準1級2021年6月の問6です。
[1]の解説で、1行目から2行目に変形できるのは... - 2](https://d1e9oo257tadp1.cloudfront.net/uploads/qa_question_image/file/1618288/thumb_l_webp_17082553993910.webp?Expires=1775106292&Signature=Pce4ol3KyavhOtK-nso-9TRK75n075Fp8LGqdwYpRLbETq8o3nE1E9J7tJCPPzTRl7b3h33M6y~LVJHo3sKjUliiFcBl00CEHiZqmwM0R9NzAPL0qWKNqWZWSYw06Zk5Ci8HgCs3plQ6Jhv9usA-68bY43jiKv2SbaHcOw0BVdePV6fXKJFEkb7bBRtIByxefAfotAR0uHxIFRZKQJBNqT6jM6dkegUbCTOiN5qjzMuWbN1EpQGTKFELoGM3aAMQiXjriRlXjfBCuwY9ssSBBf-1EM9ICNZ4I5mE01RsVOWkMdu4goQUNUJ8MXqHELtqD7ob5sbEeSS7X4E-RRF6HA__&Key-Pair-Id=K2W722D70GJS8W&Expires=1775106292&Signature=dzpYpz2zvqEe68ypKJz0PK0PwwY8rUVmQikhxYR~5NKa~holoQGaA9-d8oDY3sUyiTpqCRX5N0xBloIO263ANe~JLFlTTYE0r1rTw6BN-2Zln7zSkJWpAYVyHy-PpqKqRNbpbD--R85RJNpAOgUTN~aMeT3zSCBdm-2UuWQshFdogGoaoInkb3nz9ALLGYAuW32EkMhbCYJ8m5pybzPZT87gIlAT9JqlisPoqw7UyF-Ce~sqe0xwDEYBkoD1TQ5pXgevvbXaYhu6UAbVUR4e5YPzkTIJj5AQZeVtKGfyqzF7JXMm1vOREdd6XGQvAexJxsz8WnULa2OFlxoASyJovQ__&Key-Pair-Id=K2W722D70GJS8W)
有難うございます！
返信遅れてすみません(>_<)
助かりました