Measures of Central Tendency

Front

What is the mode?

Back

The number that appears most often.

Front

What is the mean?

Back

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

Front

What is the median?

Back

The middle number in a sorted list of numbers.

Front

How do you find the mean of a set of numbers?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What happens to the median when a new number is added to a data set?

Back

It may increase or decrease depending on the value of the new number.

Front

If the heights of players are 60, 67, 64, and 65 inches, and the mean is 65, what is the height of the 5th player?

Back

69 inches.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values).

Front

What is the median of the following set: 17, 31, 28, 16, 45, 20?

Back

The median is 20.

Front

If you score 76, 85, 97, and 83 on your math tests, what is your median score?

Back

84.

Front

What is the effect of adding a number greater than the current median to a data set?

Back

The median may increase.