Question

without making any calculations, which distribution of data has the smallest standard deviation?
1, 1, 1, 2, 2, 2
1, 1, 1, 1, 2, 2
1, 1, 1, 1, 1, 2
1, 1, 1, 1, 1, 1

Explanation:

Standard deviation measures the spread of data. The more clustered the data points around the mean, the smaller the standard - deviation. In the set 1, 1, 1, 1, 1, 1, all data points are the same, so there is no spread.

Answer:

1, 1, 1, 1, 1, 1