Measures of Central Tendency

Front

What is the mean (average) of a set of numbers?

Back

The mean is the sum of all values divided by the number of values.

Front

What is the mode in a data set?

Back

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

Front

How do you find the median of a data set with an odd number of values?

Back

Arrange the numbers in order and select the middle value.

Front

How do you find the median of a data set with an even number of values?

Back

Arrange the numbers in order, take the two middle values, and calculate their average.

Front

What is the range of a set of numbers?

Back

The range is the difference between the highest and lowest values in the set.

Front

If the scores are: 80, 85, 90, 95, what is the mean?

Back

The mean is (80 + 85 + 90 + 95) / 4 = 87.5.

Front

What does it mean if a score is the mode?

Back

It means that score was achieved by more students than any other score.

Front

How do you calculate the range of the following scores: 70, 85, 90, 60?

Back

Range = 90 - 60 = 30.

Front

What is the median of the following numbers: 3, 1, 4, 2?

Back

First, arrange them: 1, 2, 3, 4. Median = (2 + 3) / 2 = 2.5.

Front

What is the significance of the mean in a data set?

Back

The mean provides a measure of central tendency, indicating the average value.