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FORECAST

既知の値を使用して予測値を計算します。

書式

FORECAST( value , Yarray , Xarray )

引数

有効な引数は次のとおりです。

引数

説明

value

将来の従属値を予測するための値

Yarray

既知の従属値の配列(y)

Xarray

既知の独立値の配列(x)

解説

この関数は、指定したx値に対するy値を予測します。 既知の値をxおよびyとし、これらの値から得られる回帰直線を使用して、新たな値が算出されます。 この関数を使用すると、将来の売上、在庫要件、消費者傾向などを予測できます。

この関数は次のように計算されます。

FORECASTの数式

vは value 引数、Yは Yarray 引数、Xは Xarray 引数をそれぞれ表し、nは各配列のサイズを表します。

データ型

全引数に対して数値データを受け取り、 数値データを返します。

サンプル

FORECAST(30,G1:G9,F1:F9)

FORECAST(30,R1C7:R9C7,R1C6:R9C6)

FORECAST(45,{53000,57000,58000,69000,74500,55620,80000, 68700},{35,31,47,51,37,31,58,39}) 結果: 67060.8665320360