Measures of Central Tendency

Front

What is the definition of mode in a data set?

Back

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

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, sum all the values in the data set and then divide by the number of values.

Front

What is the definition of median in a data set?

Back

The median is the middle value when the 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 values.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value from the largest value in the data set.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average of the data set, median is the middle value, and mode is the most frequently occurring value.

Front

What is an example of a data set with no mode?

Back

A data set where all values occur with the same frequency, such as {1, 2, 3, 4}.

Front

How can outliers affect the mean of a data set?

Back

Outliers can skew the mean, making it higher or lower than the central tendency of the majority of the data.

Front

What is the importance of measures of central tendency?

Back

Measures of central tendency summarize a data set with a single value that represents the center of the data.

Front

In a data set of {3, 7, 7, 2, 5}, what is the mode?

Back

The mode is 7, as it appears most frequently.

Front

If a data set has an even number of values, how do you find the median?

Back

Order the data set and average the two middle values.