Spread Data

• only 2nd period is symmetric
• both plots are symmetric
• 5th period is bimodal
• 2nd period's center is higher than 5th period

• 2nd period has a gap at 16
• 5th period has an outlier
• 5th period's center is higher than 2nd period
• 2nd period's spread is greater than 5th period's spread

• the median wait time for both rides is 35
• the Red Racer has a lower maximum than the Wild Viper
• the Wild Viper has a larger spread than Red Racer
• the Red Racer has a larger IQR than the Wild Viper

• the data is skewed to the left
• the data is skewed to the right
• the shape is symmetric with an outlier
• the shape is symmetric without an outlier

Which measure of spread should be used to describe the distribution?

• standard deviation

• interquartile range

• range

• median

What does the interquartile range (IQR) measure?

• The range of the entire data set

• The spread of the middle 50% of the data

• The average value of the data set

• The difference between the mean and median

• the spread of 5th period is greater than 2nd period
• the spread of 2nd period is greater than 5th period
• 5th period is skewed right

• only Hayes Road is symmetric
• Hayes Road's center is at 60
• Jefferson Road's center is at 55
• only Jefferson Road is symmetric

• the speed on Hayes Road is greater than the speed on Jefferson Road
• the speed on Jefferson Road is greater than the speed on Hayes Road
• these data sets contain no outliers
• the center of the data set are the same

• neither plot has an outlier
• Hayes Road is skewed right
• Jefferson Road's spread is less than Hayes Road's spread
• Hayes Road's center is at 55