Unit 7 & 8 Review: Scatter plot, MAD and interest

Front

What is Mean Absolute Deviation (MAD)?

Back

MAD is a measure of the average distance between each data point and the mean of the data set.

Front

How do you calculate the Mean Absolute Deviation (MAD)?

Back

1. Find the mean of the data set. 2. Subtract the mean from each data point and take the absolute value. 3. Find the average of those absolute values.

Front

Calculate the MAD for the data set: 10, 9, 3, 8, 10.

Back

MAD = 2

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does a positive correlation indicate?

Back

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

Front

What does 'no correlation' mean?

Back

No correlation means there is no predictable relationship between two variables.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables using dots to represent data points.

Front

How can you interpret a scatter plot?

Back

You can interpret a scatter plot by looking for patterns, trends, or correlations between the variables.

Front

What is the purpose of a trend line in a scatter plot?

Back

A trend line helps to visualize the general direction of the data points in a scatter plot.

Front

Estimate the number of guests expected at a temperature of 80° based on a trend line.

Back

Approximately 8,300 guests.