Measures of Central Tendency

Front

What is the mean of a set of numbers?

Back

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

Front

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

Back

To find the median in a data set with an even number of values, arrange the numbers in ascending order and calculate the mean of the two middle numbers.

Front

What is the mode of a data set?

Back

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

Front

How do you find the range of a data set?

Back

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

Front

What is the first step in analyzing a data set?

Back

The first step is to put the data in ascending order.

Front

If a data set is: 3, 7, 7, 2, 5, what is the mode?

Back

The mode is 7, as it appears most frequently.

Front

What is the median of the following numbers: 4, 1, 7, 3?

Back

First, arrange the numbers in order: 1, 3, 4, 7. The median is the average of 3 and 4, which is 3.5.

Front

How do you calculate the mean of the numbers 10, 20, 30?

Back

Add the numbers: 10 + 20 + 30 = 60. Then divide by the count of numbers: 60 / 3 = 20.

Front

What happens if there are two middle numbers when finding the median?

Back

You find the mean of the two middle numbers.

Front

Which set has a higher mean: {2, 4, 6} or {1, 3, 5}?

Back

The mean of {2, 4, 6} is 4, while the mean of {1, 3, 5} is 3. Therefore, {2, 4, 6} has a higher mean.