stats

Front

What is the equation for a linear regression line?

Back

Front

How do you calculate the Interquartile Range (IQR)?

Back

Front

What does a scatter plot showing an exponential regression model look like?

Back

A scatter plot showing an exponential regression model typically curves upwards or downwards, indicating a rapid increase or decrease in values.

Front

What is a dot plot?

Back

A dot plot is a statistical chart consisting of data points plotted on a simple scale, where each dot represents one observation.

Front

What is relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations, often expressed as a percentage.

Front

What is the purpose of linear regression?

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The purpose of linear regression is to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation to observed data.

Front

What is the difference between Q1 and Q3 in a data set?

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Q1 (first quartile) is the median of the lower half of the data, while Q3 (third quartile) is the median of the upper half of the data.

Front

How do you interpret the slope of a linear regression line?

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The slope of a linear regression line indicates the change in the dependent variable for each one-unit change in the independent variable.

Front

What does a correlation coefficient (r) of 0.8 indicate?

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A correlation coefficient (r) of 0.8 indicates a strong positive linear relationship between two variables.

Front

What is the formula for calculating the mean of a data set?

Back