Data and Statistics Mad

What is the sample size?

• 10

• 12

• 2

• 20

What does MAD stand for?

• Mom and Dad

• Means and Differences

• Mean Absolute Deviation

• Mode and Data

What are the measures of center?

• mean

• mode

• median

• all choices

The dot plot shows the number of hours 20 sixth grade students spent studying in a week.

• The difference between the most hours and the least hours spent studying was 6 hours.

• The mean amount of study time was 5 hours.

• Nine students studied for at least 4 hours.

• Most students studied less than 4 hours.

• Only 1% of the students studied more than 6 hours.

Find the Mean of the data set

• 82

• 86

• 88

• 92

The ages of people dining in two restaurants are shown in the following box plots. Select all the statements that must be true.

• The median age of people dining in Restaurant B is greater than the median age of people dining in Restaurant A.

• The MAD (mean absolute deviation) for Restaurant B is greater than the MAD (mean absolute deviation) for Restaurant A.

• The youngest person was dining in Restaurant A.

• The IQR (interquartile range) for Restaurant A is equal to the IQR (interquartile range) for Restaurant B.

• Every person dining in Restaurant B is older than everyone dining in Restaurant A.

Here is a dot plot showing how many books are read by each student per month. Which of the following is representative sample of the population?

• 
• 
• 
• 

Here is the height of 20 flowers in the school garden, in centimeters. Draw a histogram to display the data. RECORD THIS DATA ON YOUR SCRAP PAPER 5, 5, 10, 10, 15, 25, 25, 30, 35, 45, 45, 45, 45, 50, 50, 55, 65, 70, 105, 110

What is the median (Q2)?

• 62

• 58

• 66

• 60

What measure of central tendency (mean, median or mode) would be best for the following set of data?

• Mode, because it is the one that shows up the most.

• Median, because there is an outlier. The outlier would influence the mean too much.

• Mean, because you should always use the mean.

• There is not a best measure of central tendency for this data.