Data About Us Study Guide
1.
Name:
Make a line plot with 16 names, that has a median of 14.5, and data that varies from 11 to 20 letters.
2. Ms. Sardo listed some of her mastery scores from least to greatest.
70, 70, 70, 70, 80, 80, 80, 80, 80, 80, 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100
a. What is the range of her scores?
b. What is the median of her scores?
c. What is the mode of her scores?
d. What is the mean of her scores?
e. What score is most typical in Ms. Sardo’s class? Explain your reasoning.
3. Find the mean of the following data set: 14.4, 26.7, 17.2, 20.9, 19.1, 15
4. Find the median of the following data set: 1/2, 1/3, 3/7,1/8, ¾
5. When Ms. Swanson ran 5 miles her mean time per mile was 8.25 minutes. How long did it take her to
run the 5 miles?
6. Mr. Hoyle’s homeroom of 30 students collected 300 books for the book drive. Mr. Arcaini’s homeroom
of 28 students collected 266 books for the book drive.
a. Can you calculate the median number of books each student collected for each class? If so, what
is it?
b. Can you calculate the mean number of books each student collected for each class? If so, what is
it?
c. Can you calculate the mode number of books each student collected for each class? If so, what
is it?
7.
Altogether JMR teachers have 194 household members. If there are 57 classroom teachers at JMR,
what is the mean household size? Round to the nearest tenth
For questions 8-12 label the data as numerical or categorical.
8. What is your favorite music group?
9. How much time did your classmates spend doing homework last night?
10. What do you want to do when you graduate from high school?
11. On a scale of 1-5, with 1 being not at all, and 5 being it’s the best, how much do you like math class?
12. How many steps does it take each of you classmates to get to the cafeteria?
13. Make a line plot with 20 names, that has a median and mode of 14 and data that varies from 10-18
letters.
14. The line plot below shows the number of books each student in Mrs.Forshee’s homeroom read last
summer.
Use the line plot to calculate the mean, median and mode.
How does the data on the line plot vary?
15. The stem and leaf plot below shows the amount of money each student in Mrs. Johnson’s 1st block has
in their piggy bank.
How many students were in class the day Mrs. Johnson collected the data on the stem and leaf plot?
What is the median amount of money students have?
What is the mode?
How does the amount of money her students have vary?
16. When Mrs. Kistler was in 6th grade her test grades were 88, 92, 100 and 86. What is the mean of her
test grades?
What grade would Mrs. Kistler need to get on her next test if she wants to raise her average to a 93% ?
17. Students in Ms. Simo’s class each rolled a number cube 4 times. They recorded how many times they
rolled an even number. The data is displayed in the table below.
Number of Evens
0
1
2
3
4
a)
b)
c)
d)
e)
Number of Students
4
6
12
8
2
What is the mean number of even rolls?
What is the median number of even rolls?
How many students are in Ms. Simo’s class?
How many even numbers did the students roll altogether?
How many odd numbers did the students roll altogether?
18. Mrs. Burton surveyed a group of 6th grade students to see how many times they bought lunch during
the third quarter. The information is listed below. Use this data to create a stem and leaf plot.
9, 5, 14, 21, 22, 45, 45, 33, 30, 16 ,21 ,40, 2 ,5, 21, 39, 36, 21, 25, 17
What is a typical amount of days for a 6th grader to buy lunch each quarter? Explain your answer.
19. The line plot below shows the number of A’s each 6th grader has in their core classes this quarter. Each
X equals 5 students.
How many students have more than 1 and less than 4 A’s?
How many students are represented on the line plot?
How many students have either all A’s or no A’s?
20. Pretend you earned the following grades on your first 9 math masteries. 100, 100, 100, 90, 90, 100, 80,
100, 100
What is your mean score?
On week 10 you are sick and miss 3 days of school. You can’t get your mastery checked in the
mornings and get a 40. What is the mean of your mastery grades now?
Which grade is an outlier? How did it change your grade?