One-Variable Statistics Review

Front

What is the best measure of center for a skewed data set?

Back

Median

Front

What does the Interquartile Range (IQR) measure?

Back

The variability or spread of the data.

Front

How can you determine the spread of a data set?

Back

By calculating measures such as range, variance, or standard deviation.

Front

What does a smaller spread in a data set indicate?

Back

Less variation among the data points.

Front

What is the definition of skewed data?

Back

Data that is not symmetrical and has a tail on one side.

Front

What does it mean if a data set is skewed to the right?

Back

The majority of the data points are concentrated on the left, with a few larger values on the right.

Front

What is the relationship between the mean and median in a right-skewed distribution?

Back

The mean is typically greater than the median.

Front

What is a common method to visualize the spread of data?

Back

Box plots or histograms.

Front

What is the purpose of calculating the median?

Back

To find the middle value of a data set, especially when it is skewed.

Front

What does it mean if a data set has an IQR of 0?

Back

All the data points are the same; there is no variability.