1.6-1.7 Quickcheck

Which measures of center and variability resist outliers?

• The mean and the IQR

• The mean and standard deviation

• The median, IQR, and range

• The median and IQR

Data was collected about the number of doors that are inside houses. If the IQR of the dataset was found to be 5, what is the correct interpretation of this value in context?

• The data has a range of 5 doors.

• The middle half of the data has a range of 5 doors.

• The data typically varies from the mean by about 5 doors.

• The average value of the data is about 5 doors.

Which measures of center and variability should I use when the data is skewed, or there are outliers?

• Median and IQR

• Mean and Standard Deviation

• Mean and IQR

• Median and Standard Deviation

How can I tell if a dataset has a symmetric shape?

• Mean < Median

• Mean > Median

• Mean = Median

How can I tell if a dataset has a skewed right shape?

• Mean > Median

• Mean = Median

• Mean < Median

Data was collected about the number of doors that are inside houses. If the median of the dataset was found to be 7, what is the correct interpretation of this value in context?

• 50% of the data values are below 7 doors, and 50% of the data values are above 7 doors

• The middle half of the data has a range of 7 doors

• The data typically varies from the mean by 7 doors

• The average value of the dataset is 7 doors

Which measures of center and variability do not resist outliers?

• Median and IQR

• Mean, Range, and Standard Deviation

• Mean and IQR

• Median and Standard Deviation

Which measures of center and variability should I use when the data is symmetric, and there are no outliers?

• Mean and IQR

• Median and Standard Deviation

• Median and IQR

• Mean and Standard Deviation

Which measure of center will be the smallest?

(Remember which one pulls toward the tail)

• median

• mean

• mode

Data was collected about the number of doors that are inside houses. If the standard deviation of the dataset was found to be 2, what is the correct interpretation of this value in context?

• The values in the dataset typically vary from the mean by 2 doors.

• The average value of the dataset is 2 doors.

• 50% of the data is greater than 2 doors, and 50% of the data is less than 2 doors.

• The middle half of the data has a range of 2 doors.