Question

a scientist collected two sample sets of snowfall data. which statistic should he use to compare the spread of the two sets of data?
median
mode
mean
standard deviation

Explanation:

Step1: Define each statistic

Median is the middle - value, mode is the most frequent value, mean is the average value. Standard deviation measures the amount of variation or dispersion of a set of values.

Step2: Identify the statistic for spread

Since we want to compare the spread of two data - sets, standard deviation is the appropriate statistic as it quantifies how far the data points are from the mean. The other statistics (median, mode, mean) do not measure spread.

Answer:

D. standard deviation