Outliers in Data Sets

The test grades for 15 students are shown. 96, 94, 88, 92, 90, 85, 54, 78, 88, 98, 98, 97, 80, 75. If the score of 54 was removed from the set, then what will make the statement below true. The mean will ​ (a)  

• Increase

• Decrease

• Stay the Same

The test grades for 15 students are shown.

96, 94, 88, 92, 90, 85, 54, 78, 88, 98, 98, 97, 80, 75

If the score of 54 was removed from the set, then what will make the statement below true.

The Median will ​ ​ (a)  

• Stay the Same

• Increase

If an outlier is included in a data set the ________________ is the least affected.

• Mean

• Median

• Range

• Standard Deviation

Based on the data recorded below, which data point would considered an outlier.

72, 75,70, 59, 74, 72, 76

• 59

• 72

• 76

• 75

• only one of the data sets is symmetric
• the median in 1st period is greater than the median in 5th period
• the highest test score is the same in both classes
• the interquartile range is larger in 1st period than in 5th period

• 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

• 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

• 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

• 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