Question

if we collect a large sample of blood platelet counts and if our sample includes a single outlier, how will that outlier appear in a histogram?
choose the correct answer below.
a. since a histogram shows frequencies, not individual data values, the outlier will not appear. instead, the outlier increases the frequency for its class by 1.
b. the outlier will appear as a tall bar near one side of the distribution.
c. the outlier will appear as the tallest bar near the center of the distribution.
d. the outlier will appear as a bar far from all of the other bars with a height that corresponds to a frequency of 1.

Explanation:

A histogram represents data grouped into classes and shows the frequencies of those classes. An outlier is a data - point that is far from other data points. Since it is a single value, it will be in its own class (assuming a large enough range of classes to separate it from the rest of the data). It will create a bar far from the other bars, and since it is a single value, its frequency is 1.

Answer:

D. The outlier will appear as a bar far from all of the other bars with a height that corresponds to a frequency of 1.