Algebra 1 Statistics Review

Front

What is the relationship between the age of a car and its value?

Back

As the age of the car increases, its value decreases. This is a negative correlation.

Front

What is the best measure of central tendency for a set of salaries: $15,000; $18,000; $16,000; $14,000; $90,000; $17,000?

Back

The best measure is the median, as it is less affected by extreme values.

Front

Back

The predicted distance is 617.51 miles.

Front

What is a negative association in a scatterplot?

Back

A negative association means that as one variable increases, the other variable decreases.

Front

What does the correlation coefficient r = -0.89 indicate about the relationship between two variables?

Back

It indicates a strong negative linear relationship.

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two quantitative variables.

Front

What is the mean of the salaries: $15,000; $18,000; $16,000; $14,000; $90,000; $17,000?

Back

The mean is approximately $26,666.67.

Front

What is the mode of a set of numbers?

Back

The mode is the number that appears most frequently in a data set.

Front

What does a residual represent in a linear model?

Back

A residual is the difference between the observed value and the predicted value.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in the data set.