Question

which of the following does not reveal the variation (spread) of the data?
the median
the 5 number summary
standard deviation
the range
all of the above show spread

Explanation:

The median is a measure of central - tendency that gives the middle value of a data set. It does not provide information about how spread out the data is. The 5 - number summary (minimum, Q1, median, Q3, maximum) gives some information about spread through the inter - quartile range (Q3 - Q1). Standard deviation measures the average amount by which each data point differs from the mean, indicating spread. The range is the difference between the maximum and minimum values in the data set, which also shows spread.

Answer:

the median