Manuals/calci/FORECAST
FORECAST(n,y,x)
- Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle n} is the data point .
- Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle y} is the dependent array of data.
- Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle x} is the independent array of data.
Description
- This function gives the predicted value of the dependent variable for the specific value, x, of the independent variable by using a least squares linear regression to predict y values from x values.
- In Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle FORECAST(n,y,x), n} is the data point to predict a value. Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle y} is the dependent array of data to predict the Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle y} -value and is the independent array of data to predict the Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle y} -value.
- The formula for Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle FORECAST} is Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle a+bx} , where Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle a=\bar{y}-b \bar{x}} and Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle b=\frac{\sum (x-\bar{x})(y-\bar{y}}{\sum(x-\bar{x})^2}} . Here Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \bar{x}} and Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \bar{y}} are the sample means of x and y.
- This function will give the result as error when
is the independent array of data to predict the Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle y}
-value.1. Any one of the value is nonnumeric. 2. The values of x and y are empty or contain a different number of data points. 3. The variance of x is zero. where n, y and x .
FORECAST(x1, ky1’s, kx1’s)
Where X1 is the data point, ky1 is the dependent array or range of data and ky2
is the independent array or range of data.
It Predicts or calculates a future value by using existing values. The predicted value is a y1-value for a given x1-value.
· FORECAST displays an error, when x is nonnumeric.
· when the variance of kx1’s equals zero FORECAST displays errror.
· The equation for FORECAST is a+bx, where:
and:
and where x and y are the sample means AVERAGE(kx1's) and AVERAGE(ky1's).
FORECAST
Syntax
Remarks
Examples
Description
| Column1 | Column2 | Column3 | Column4 | |
| Row1 | 4 | 25 | 4.730174 | |
| Row2 | 5 | 23 | ||
| Row3 | 8 | 32 | ||
| Row4 | 17 | 36 | ||
| Row5 | 22 | 40 | 0 | |
| Row6 |
AVEDEV (N1, N2...) Where N1, N 2 ... are positive integers.
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