Difference between revisions of "Manuals/calci/COVAR"
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| Line 2: | Line 2: | ||
where, | where, | ||
| − | *<math>a1</math> first array of integers or reference to the cells containing array | + | *<math>a1</math> is the first array of integers or reference to the cells containing array |
| − | *<math>a2</math> second array of integers or reference to the cells containing array | + | *<math>a2</math> is the second array of integers or reference to the cells containing array |
COVAR calculates the covariance, the average of the products of deviations for each data point pair in two arrays. | COVAR calculates the covariance, the average of the products of deviations for each data point pair in two arrays. | ||
| Line 55: | Line 55: | ||
=COVAR(A2:A6,B2:B6) : Returns ''4'' as the output. | =COVAR(A2:A6,B2:B6) : Returns ''4'' as the output. | ||
| − | =COVAR(A2:A5, | + | =COVAR(A2:A5,[12,13,14,15]) : Returns ''2.5'' as the output. |
== See Also == | == See Also == | ||
Revision as of 09:59, 21 January 2014
COVAR(a1,a2)
where,
- is the first array of integers or reference to the cells containing array
- 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 a2} is the second array of integers or reference to the cells containing array
is the first array of integers or reference to the cells containing arrayCOVAR calculates the covariance, the average of the products of deviations for each data point pair in two arrays.
Description
COVAR(a1,a2)
- COVAR is used to determine the relationship between two data sets.
- Arguments 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 a1} , 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 a2} can be numbers or can be names, arrays or references containing numbers.
- Values containing text, logical values or empty cells are ignored.
- If either 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 a1} or 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 a2} is empty, Calci displays a NaN error message.
- The number of data points 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 a1} 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 a2} should be same, else Calci displays a #N/A error message.
Examples
| Array 1 | Array 2 | |
| 2 | 21 | |
| 4 | 22 | |
| 6 | 23 | |
| 8 | 24 | |
| 10 | 25 |
=COVAR(A2:A6,B2:B6) : Returns 4 as the output. =COVAR(A2:A5,[12,13,14,15]) : Returns 2.5 as the output.