Review of mean, median, and mode

Front

What is the mean?

Back

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

Front

What is the median?

Back

The median is the middle number in a sorted list of numbers. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode?

Back

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

Front

How do you find the mean of a data set?

Back

Add all the numbers in the data set together, then divide by how many numbers are in the set.

Front

How do you find the median in a data set?

Back

Put the numbers in order, then find the number in the middle. If there are two middle numbers, average them.

Front

What is the median of the set: 5, 1, 6, 7, 4, 3?

Back

The median is 4.5, found by ordering the numbers (1, 3, 4, 5, 6, 7) and averaging the two middle numbers (4 and 5).

Front

What is the mean of the set: 5, 4, 7, 8, 9, 2?

Back

The mean is 5.83, calculated by adding the numbers (35) and dividing by the count (6).

Front

What is the mean of the set: 10, 11, 15, 13, 12, 11?

Back

The mean is 12, calculated by adding the numbers (72) and dividing by the count (6).

Front

If a data set has no repeating numbers, what is the mode?

Back

There is no mode, as mode is defined as the number that appears most frequently.

Front

What happens if all numbers in a data set are the same?

Back

The mean, median, and mode will all be equal to that number.