Calculate the sum and correlation for the following data:
X | Y |
2 | 33 |
3 | 42 |
4 | 54 |
5 | 64 |
6 | 77 |
Value | Key | Display | Description |
---|---|---|---|
shift clr l | 0 | Clears the x and y lists. | |
33 | = or ENTER | 33.0000 | Enters y value. |
2 | Σ+ | 1.0000 | Append x and y to lists x and y. |
42 | = or ENTER | 42.0000 | Enters y value. |
3 | Σ+ | 2.0000 | Append x and y to lists x and y. |
Repeat for the remaining data. |
Data can be verified and corrected using the List Manager.
The calculations below that measure central tendency and spread return values for both the x and y lists to the x and y registers of the stack. In RPN mode, both values will be displayed as long as 2 or more rows are displayed. ALG mode only displays the x register of the stack, so you will need to tap SWAP to see the y register value.
mean | 54.0000 y 4.0000 x |
Calculates the mean of lists x, y. |
Σx,y | 270.00 y 20.00 x |
Calculates the sum of lists x, y. |
var | 303.50 y 2.50 x |
Calculates the sample variance of lists x, y. |
crrl | 0.9984 | Calculates the correlation coefficient between lists x, y. |
covar | 22.00 | Calculates the covariance of lists x, y. |
w mn | 59.50 | Calculates the weighted mean of list y. |
The curve fitting calculators can be used on this data: