Box plots and outliers

Front

The second quartile is the same as the __________________ .

Back

median

Front

How can you determine if a data set has outliers using a box and whisker plot?

Back

By identifying data points that fall below Q1 - 1.5 * IQR or above Q3 + 1.5 * IQR.

Front

Given the information below, determine which of the answer choices would be considered an outlier. Q1: 48, Median: 65, Q3: 90

Back

none of the above

Front

Find all possible outliers for the following set of 15 data items: 108, 31, 75, 87, 79, 88, 89, 118, 51, 89, 174, 95, 51, 70, and 73.

Back

31 and 174

Front

What value is the lower quartile?

Back

60

Front

What is a box plot?

Back

A graphical representation of a data set that displays the median, quartiles, and potential outliers.

Front

What does IQR stand for?

Back

Interquartile Range, which is the difference between the first quartile (Q1) and the third quartile (Q3).

Front

How do you calculate the IQR?

Back

IQR = Q3 - Q1.

Front

What is the purpose of a box plot?

Back

To summarize a data set and identify its central tendency and variability.

Front

What are outliers?

Back

Data points that fall significantly outside the range of the rest of the data.