8th Math Review 2

Front

What does a positive correlation in a scatter plot indicate?

Back

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

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does it mean if a scatter plot has one outlier?

Back

An outlier is a data point that differs significantly from other observations. It can affect the overall correlation and interpretation of the data.

Front

What is the definition of correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What does it mean if there is no correlation between two variables?

Back

No correlation means that there is no predictable relationship between the two variables; changes in one do not affect the other.

Front

What is a two-way table?

Back

A two-way table is a statistical table that displays the frequency distribution of two categorical variables.

Front

How do you calculate the percentage of a specific group in a data set?

Back

To calculate the percentage, divide the number of individuals in the group by the total number of individuals, then multiply by 100.

Front

What is the purpose of using scatter plots in data analysis?

Back

Scatter plots are used to visually assess the relationship between two variables and identify trends, patterns, or correlations.

Front

What does a negative correlation in a scatter plot indicate?

Back

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

Front

What is the significance of the slope in a linear relationship?

Back

The slope indicates the rate of change between the two variables; a positive slope means an increase, while a negative slope means a decrease.