Question

question 7 (multiple choice worth 2 points)
items at a large warehouse were sampled and data recorded. the weights (in ounces) of 10 bags of popcorn were 15.9, 16.2, 15.8, 15.9, 16.0, 16.1, 15.9, 16.0, 16.2, 16.1
which of the following is the best type of display for the data if the exact mean must be calculated? explain your reasoning
options (partially visible):
histogram, it lists exact data values in a compact form
stem - and - leaf plot, there is a large data set, and approximate values of individual data points are displayed
histogram, there is a large data set, and approximate values of individual data points are displayed
stem - and - leaf plot, it lists exact data values in a compact form

Explanation:

To calculate the exact mean, we need the exact data values. A stem - and - leaf plot lists exact data values in a compact form. A histogram shows approximate values (grouped data) and does not list exact individual data points. The data set here has 10 values (a small data set, but the key is about exact values). The option "Stem - and - leaf plot; it lists exact data values in a compact form" is correct because it provides the exact data points needed for an exact mean calculation, while histograms use grouped (approximate) data.

Answer:

Stem - and - leaf plot; it lists exact data values in a compact form