Alg Supp Unit 3 Study Guide

Front

What does a positive correlation between two variables indicate?

Back

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

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

Front

What is the IQR (Interquartile Range)?

Back

The IQR is a measure of statistical dispersion, calculated as the difference between the third quartile (Q3) and the first quartile (Q1).

Front

How do you identify an outlier using the 1.5 IQR rule?

Back

An outlier is identified as any value that is less than Q1 - 1.5*IQR or greater than Q3 + 1.5*IQR.

Front

What does a scatter plot represent?

Back

A scatter plot represents the relationship between two quantitative variables, showing how one variable may be affected by another.

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, used to predict values.

Front

What is the significance of double pay in a work context?

Back

Double pay typically refers to an employee earning twice their regular hourly wage for hours worked beyond a certain threshold, often overtime.

Front

What is an example of causation?

Back

An example of causation is the relationship between the number of cups of coffee sold and the amount of coffee beans purchased.

Front

What does it mean if two variables have no correlation?

Back

If two variables have no correlation, it means that changes in one variable do not predict changes in the other variable.

Front

How can you determine the missing value in a data set using a scatter plot?

Back

You can determine the missing value by analyzing the trend of the data points and using the line of best fit to estimate the value.