Step 3: Unit 3 Project Intro to Stats

Front

What is the median in a data set?

Back

The median is the middle number in a data set when the numbers are arranged in order from least to greatest.

Front

How do you find the median of the following numbers: 60, 58, 52, 48, 60, 67?

Back

Arrange the numbers: 48, 52, 58, 60, 60, 67. The median is the average of the two middle numbers (58 and 60), which is 59.

Front

What is a z-score?

Back

A z-score indicates how many standard deviations an element is from the mean.

Front

What is the z-score of the mean?

Back

0, because the mean is the center of the data set.

Front

What is the mean of a data set?

Back

The mean is the average of all the numbers in the data set.

Front

How do you calculate the mean?

Back

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

Front

What is standard deviation?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

If the average height of women in the U.S. is 62 inches with a standard deviation of 2 inches, what is the height of a woman who is 1 standard deviation below the mean?

Back

60 inches.

Front

What does it mean if a data point has a z-score of -1?

Back

It means the data point is 1 standard deviation below the mean.

Front

What is the mode in a data set?

Back

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