Data and Real Number System Final Review

Front

What is the mean absolute deviation?

Back

The mean absolute deviation (MAD) is a measure of the dispersion of a set of data points. It is calculated as the average of the absolute differences between each data point and the mean of the data set.

Front

Calculate the mean absolute deviation of the data: 15, 20, 25, 17, 18.

Back

2.8

Front

Simplify the expression: -6√5 + 2√45.

Back

0

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot. It shows the trend of the data points.

Front

Which set of data points could BEST be modeled by a line of best fit that is a decreasing linear function?

Back

{(0,50), (1,42), (2,33), (3,25), (4,16)}

Front

What is the square root of 9?

Back

3

Front

Back

Natural, whole, integer, rational, real.

Front

Define correlation in statistics.

Back

Correlation is a statistical measure that describes the extent to which two variables change together. It can be positive, negative, or zero.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.