“ A N S ” K E Y S F O R 2 -V A R I A B L E S T AT I S T I C S
In addition to the
C alculates the sum of the product for sample data X and sample dataY. C alculates the sum of the data (sample dataY).
C alculates the sum of the data (sample dataY) raised to the second power. C alculates the average value of the data (sample dataY).
C alculates the standard deviation of a data population (sample dataY). C alculates the standard deviation for the data (sample dataY).
N OT E :
The codes for basic statistical quantities of sample data X and their meanings are the same as those for
<Let’s check the results based on the previous data.>
7.175 | (Average for data X ) |
0.973579551 | (Standard deviation for data X ) |
0.91070028 | (Standard deviation of the population for data X ) |
9.875 | (Average for data Y) |
3.440826313 | (Standard deviation for dataY) |
3.218598297 | (Standard deviation of the population for data Y) |
8 | (Total count of data) |
57.4 | (Sum of data X ) |
418.48 | (Data X raised to the second power) |
544.1 | (Sum of the product of data X and dataY) |
79 | (Sum of data Y) |
863 | (DataY raised to the second power) |
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