7th Grade Data & Probability Standards Review

Front

What is the median of a set of numbers?

Back

The median is the middle value when a data set is ordered from least to greatest. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you find the median of the following numbers: 88, 84, 86, 88, 92, 94, 96, 78, 88, 80, 84, 86?

Back

First, order the numbers: 78, 80, 84, 84, 86, 86, 88, 88, 88, 92, 94, 96. The median is the average of the two middle numbers (86 and 88), which is 87.

Front

What is the mode of a set of numbers?

Back

The mode is the number that appears most frequently in a data set.

Front

What is the mode in this set of numbers: 7, 14, 20, 3, 7, 14, 2, 14, 7?

Back

The mode is 7 and 14, as both appear most frequently.

Front

What is the mean of a set of numbers?

Back

The mean is the average of a data set, calculated by adding all the numbers together and dividing by the total count of numbers.

Front

What is the mean number of pages Carolyn wrote per day if she wrote: 9, 8, 12, 6, 10?

Back

The mean is (9 + 8 + 12 + 6 + 10) / 5 = 9.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly different from the other values in a data set.

Front

Find the outlier in the set of data: 7, 8, 11, 7, 6, 15, 31.

Back

The outlier is 31, as it is much larger than the other numbers.

Front

How do you determine the median wait time from a set of data?

Back

Order the wait times from least to greatest and find the middle value. If there is an even number of values, average the two middle values.

Front

Which restaurant has a higher median wait time if given two sets of wait times?

Back

Compare the median values of both sets to determine which is higher.