Download Find the mean absolute deviation (MAD) of the following data sets

Algebra 1
Name _____________________
Period ______Date ___________
Find the mean, median, mode, range and mean absolute deviation (MAD) of the following data
sets.
1. 40, 46, 41, 46, 49, 49, 46, 44, 44
2. 50.8, 51.6, 51.9, 52, 52.5, 52.8, 53.1
Mean _____
Mean _____
Median _____
Median _____
Mode _____
Mode _____
Range _____
Range _____
MAD _____
MAD _____
3. In problem 2 above, what data point value would be:
a) Two mean absolute deviations below the mean?
b) One and a half mean absolute deviations above the mean?
4. Look at your results from problems 1 and 2 above. Which data set is the most disperse? How
do you know?
5. The number of visitors to Justin’s blog site during the past 10 days are as follows:.
46, 53, 35, 58, 63, 51, 71, 31, 47, 25
The number of visitors to Tony’s blog site during the same 10 days are as follows:
51, 53, 45, 54, 49, 57, 46, 39, 53, 54
a) What is the mean number of visitors each blog sites had in the past 10 days? Round to
nearest whole number.
b) Compare the dispersion in the number of visitors for each blog site using standard
deviation. Round your answers to the nearest hundredth.
c) What number of visitors to Tony’s blog site would be one standard deviation below the
mean? Round to nearest whole number. (Hint: you need to know the mean first…)
d) What number of visitors to Justin’s blog site would be two and a half standard
deviations above the mean? Round to nearest whole number.
e) For which blog site would 62 visitors be considered more unsusual, for Justin’s blog
site, or for Tony’s blog site?