Statistics Review

Front

Statistic that cannot be determined from a box plot of math test scores in Mrs. DeRidder’s algebra class:

• the lowest score
• the median score
• the highest score
• the score that occurs most frequently

Back

the score that occurs most frequently

Front

Which statement about the data is not true? Options: The median is 3., The interquartile range is 2., The mean is 3., The data contain no outliers.

Back

The mean is 3.

Front

The team signs an additional player to a contract worth 10 million dollars per year. What happens to the median and mean of the annual salaries?

Back

Only the mean will increase.

Front

Which destination has a median temperature above 80 degrees and the smallest interquartile range? Options: Ocean Beach, Whispering Palms, Serene Shores, Pelican Beach

Back

Pelican Beach

Front

Isaiah collects data from two different companies, each with four employees. The results of the study, based on each worker’s age and salary, are listed in the tables below.

Which statement is true about these data?

Back

The salary range in company 2 is greater than the salary range in company 1.

Front

Christopher's Algebra quiz scores: Semester 1: 78, 91, 88, 83, 94; Semester 2: 91, 96, 80, 77, 88, 85, 92. Which statement about his performance is correct?

Back

The mean score for semester 2 is greater than the mean score for semester 1.

Front

Gabriella’s quiz grades are shown below.
88, 92, 92, 96, 98
Gabriella scored a 20 on her sixth quiz. What effect does this score have?

Back

The low score causes the mean to decrease.

Front

Find the Mean.

Back

5.8

Front

Find the IQR (interquartile range) using the following information.
Minimum:  77
Q1:  79.5
Median:  86.5
Q3:  90.5
Maximum:  99

Back

11

Front

Who has the least interquartile range? Options: Yardley Grocery, Vindale Grocery

Back

Yardley Grocery