Compare and interpret the measures to select the data with the least variation.

Dataset C has a standard deviation of 1.2 and a mean of 25.
ith the least variation.
Dataset B has a standard deviation of 1.41 and a mean of 29.
Dataset A has a standard deviation of 1.9 and a mean of 21.
Dataset D has a standard deviation of 1.14 and a mean of 48.

In order to select the data with the least variation, we should consider the standard deviation. The standard deviation is a measure of the amount of variation or dispersion in a set of values. A smaller standard deviation indicates that the data points are closer to the mean and have less variation.

Looking at the standard deviations provided for each dataset, we can see that Dataset D has the smallest standard deviation of 1.14. This means that Dataset D has the least variation compared to the other datasets.

It is important to note that the mean values of the datasets do not play a role in determining which dataset has the least variation. The mean simply represents the average value of the dataset. In this case, Dataset D has a mean of 48, which is the highest mean among the datasets, but it still has the least variation based on the standard deviation.

Therefore, if we are looking to select the data with the least variation, Dataset D would be the best choice out of the datasets provided.