Interactive imagesTwo cells, which spreads more?
Two cells, which spreads more?
From step 3 of From time series to a map of temporal variability
Two cells of the study window with the same number of valid monthly values, their profiles on one axis. Guess which spreads more, then see each cell's temporal standard deviation.
Look at two monthly profiles on the same axis, choose the one whose values spread more, and compare their temporal standard deviations.
Two other cells, each with 13 valid values, on the same axis. Which spreads more?
For reference, the cell followed so far (row 148, column 199) has a temporal standard deviation of 0.0476, from 13 valid values.
What to try
- Compare the profiles. Both cells rest on the same number of valid values. Look for the values that lie far from the rest: which profile has more of them, or larger ones?
- Predict, then reveal. Press This one spreads more under the cell you think spreads more, or Show the answer. Both scores appear: did the eye agree with the number?
- Open the equation. The equation, and why n − 1 opens on the journey’s step: the sum of squares, the divisor and the root, for the followed cell.