Measure of Center w/ Balance Point

Front

What is the mean in a data set?

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

What is the median in a data set?

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 in a data set?

Back

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

Front

What is the range in a data set?

Back

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

Front

How do you find the mean of the numbers 2, 4, 6, 8?

Back

Add the numbers (2 + 4 + 6 + 8 = 20) and divide by the count (4). Mean = 20 / 4 = 5.

Front

How do you find the median of the numbers 3, 1, 4, 2?

Back

Arrange the numbers in order (1, 2, 3, 4). The median is the average of the two middle numbers (2 and 3), so (2 + 3) / 2 = 2.5.

Front

What happens to the median if you add a number that is equal to the current median?

Back

The median remains the same because the middle value does not change.

Front

What is a balance point in a data set?

Back

The balance point is the mean, where the data set is evenly distributed around it.

Front

If a data set has the numbers 5, 5, 5, 5, what is the mode?

Back

The mode is 5, as it appears most frequently.

Front

What is the median of the data set {7, 3, 5, 9, 1}?

Back

First, arrange the numbers in order: {1, 3, 5, 7, 9}. The median is 5.