Test PracticeT
496 Statistical Displays- C OPEN ENDED Write a data set for each of the following.
a. at least four numbers that have a mean of 5 and a median that is not 5
b. at least six numbers that have a mean of 10 and a mode of 10 - REASONING Suppose you are ordering school T-shirts for next year. You
are ordering only one color and decide to look at the sales figures from
this year to make your decision. If the figures are given according to
size, should you find the mean, median, or mode for the data? Explain. - CHALLENGE The range of a data set is the difference between the greatest
and least values. A set of three numbers has a mean of 40, a median of 41,
and a range of 9. What are the three numbers? - E WRITE MATH Explain why the mean is the measure of central
tendency that is most affected by extreme values. - A group of 99 students Siblings
zero 5
one 37
two 28
three 29
were asked how many
siblings they each have.
The results are shown
in the table.
If the 100th student
answered 5 siblings,
which measure below would be most
affected?
A. mean C. mode
B. median D. none of them- SHORT RESPONSE Vicki went
fishing and caught 6 fish that weighed
7.3 pounds, 5.1 pounds, 8.8 pounds,
4.5 pounds, 5.6 pounds, and 2.4 pounds.
She put the smallest fish back in the lake
at the end of the day. What is the
difference in the mean, median, and
mode of the six fish compared to the
mean, median, and mode of the five fish
she kept?
27. Hiroshi’s bowling scores are shown.
179, 178, 210, 180, 182, 190If he bowled a 150 in his next game,
which of the following statements
would be true?
F. The median would increase.
G. The mean would increase.
H. The median would decrease
I. The mode would decrease.- The amount of money Mario earned
each week mowing grass is shown.
$40, $56, $36, $44, $36Which measure of central tendency
would show the greatest amount of
money earned?
A. mean
B. median
C. mode
D. all of the above490_497_C09_L1_895130.indd 496 1/11/10 9:31 AM