Use the arrow keys to navigate to L1 (the first column). Press ⎚ Clear. Press ↵ Enter. Repeat for other lists with data.
Some non-plus models may skip this screen and display your results automatically.
Sx shows the standard deviation for a sample, while σx shows the standard deviation for a population. The value you’ll use depends on whether you used data from a sample or a full population. [2] X Research source A lower standard deviation value means that the values in your list don’t vary much from the mean, while a higher value means your data is more spread out. [3] X Research source x̄ represents the mean, or average, of the values. Σx represents the sum of all values.
