Use the table to answer the question.

Question

Dataset 1, 2, 3
Mean 78, 87, 83
Standard Deviation 1.23, 1.42, 1.19

Which dataset has the least variability?

(1 point)
Responses

Dataset 1
Dataset 1

Dataset 2
Dataset 2

Dataset 3

Answer 1

To determine which dataset has the least variability, we can look at the standard deviation values for each dataset. The standard deviation measures the dispersion or spread of the data points around the mean; a lower standard deviation indicates less variability.

The standard deviations for the datasets are as follows:

• Dataset 1: 1.23
• Dataset 2: 1.42
• Dataset 3: 1.19

Among these:

• Dataset 1 has a standard deviation of 1.23
• Dataset 2 has a standard deviation of 1.42
• Dataset 3 has a standard deviation of 1.19

Since Dataset 3 has the lowest standard deviation at 1.19, it has the least variability.

The answer is Dataset 3.