Name: __________________
Date: _________
Review Sheet
1) The mean of 6 and 𝑥 is the same as the mean of 40 and 50. What is the value of𝑥?
2) If the mean of 4 scores is 85, what is the total of the four scores?
3) Jesse has scores of 90, 95, 100, 80 and 70 on his math tests. What is the lowest grade he can get to
finish the year with the average of 80?
4) Find the average of 2𝑥, 𝑥, 5𝑥, 𝑎𝑛𝑑 4𝑥 − 4
5) Create a stem-leaf plot for the following monthly salaries:
McDonald’s
(rounded to the nearest
hundred dollars)
900
800
2000
1100
1200
1100
1100
1200
1000
1100
1200
1200
1100
900
900
1900
1200
1400
Burger king
(rounded to the nearest
hundred dollars)
6) The following is a list of 22 test scores from one of Miss Broukhim’s math class:
80, 83, 90, 83, 30, 75, 70, 74, 75, 75, 81, 60, 58, 82, 84, 50, 86, 68, 75, 61, 50, 85
a) Fill in the table on the right.
Interval
b) Construct a frequency histogram below.
30 – 39
Tally
Frequency
Cumulative
Frequency
c) What is the mean?
d) What is the median?
e) What is the mode?
f) What interval contains the mode?
g) What interval is the mode?
h) What comments can you make about the test scores? What kind of test was this (easy, fair, or
hard)?
i) If a student complains about the test, which mathematical information should the student use?
How should Miss Broukhim respond?