Rio Unit 1 Assessment
1. Ms. El-Khouri’s test grades in math were 85, 99, 92, 76, and 93. What was Ms. El-Khouri’s average in
math?
A. 87
B. 88
C. 89
D. 90
2. Which measure is always the same as the 25th percentile?
A. median
B. mean
C. upper quartile
D. lower quartile
3. The table below recorded the number of days with the indicated maximum temperature for last year.
Degrees
< 50 º
50 º - 60 º
61 º-70 º
71 º- 80 º
81 º - 90 º
91 º - 100 º
# of Days
34
49
44
33
18
4
How many days had a maximum temperature between 61º and 90º?
A. 44
B. 77
C. 95
D. 99
4. In which set of data are the mean median, and mode equal to 8?
A. {2, 4, 6, 8, 10 ,12, 14}
B. {8, 8, 10 14, 20}
C. {6, 6, 8, 8, 8, 8, 10, 10}
D. {2, 2, 6, 8, 8 ,12}
5. Which is true about the set of numbers: 35, 45, 49, 49, 21, 51, 51, 61, 67
A. The mean is greater than the mode.
B. The median is greater than the mean.
C. The mode is greater than the median.
D. The three measures of central tendency (mean, median, and mode) are equal.
6. Ms. Knox and Mrs. Altenhof are in the same mathematics class. On the first five tests, Ms. Knox
received scores of 78, 77, 64, 86, and 70. Mrs. Altenhof received scores of 90, 61, 79, 73, and 87. How
much higher is Mrs. Altenhof’s average than Ms. Knox’s average?
A. 4 points
B. 3 points
C. 15 points
D. 2 points
7. Five girl scouts reported the number of boxes of yummy cookies they sold: 20, 20, 40, 50, and 70.
Which is true?
A. The mean is 20.
B. The median is equal to the mean.
C. The median is equal to the mode.
D. The median is 20.
8. Which statement is true about the following set of data?
80, 85, 85, 85, 90
A. mean > median
B. mean = median
C. median> mode
D. mean < mode
Rio Unit 1 Assessment
9. The table below shows the number of points scored by the basketball team in each of the past 5 games.
Basketball Scores
Game #
# of points
scored
1
36
2
30
3
34
4
30
5
35
What was the average number of points scored by the basketball team in the past 5 games?
A. 30
B. 34
C. 35
D. 45
10. So far this term, Mrs. Bean has these scores on quizzes: 87, 86, 96, 87.
What is the lowest score she can get on the one remaining quiz to have a final mean score of 90?
A. 90
B. 91
C. 94
D. 97
11. The temperature for a sample for twenty-five days is shown in ºF in the box-and-whisker plot below.
About what percentage of days had a maximum temperature of at least 70 degrees?
A. 25%
B. 50%
C. 75%
D. 100%
12. Base your answer to the following question on the bar graph below.
How many more questions did the fastest students complete than the slowest student?
A. 2
B. 3
C. 4
D. 5
Rio Unit 1 Assessment
13. The box-and-whisker plot below represents the scores earned on a math test.
What is the median score?
A. 70
B. 75
C. 77
D. 85
14. Base your answer to the following question on the line graph below on the daily temperature variation
in Hotville, FL.
How much did the temperature vary in Hotville, FL on this day?
A. 14º F
B. 16º F
C. 18º F
D. 20º F
15. Find the lower quartile.
A. 50
B. 60
C. 30
D. 65
16. The line plot below represents the number of letters written to overseas pen pals by the students at
Carrington Middle School. Each x represents 10 students. How many students wrote 10 or fewer letters?
A. 60
B. 110
C. 100
D. 70
Rio Unit 1 Assessment
17. Look at the bar graph below to answer the question.
According to the chart, how many more students passed in 2000 than 1999?
A. 5
B. 9
C. 12
D. 20
18. Which statement about the box and whisker plot is not true?
A. The median is 88.9
C. The upper quartile is 100.2
B. The lowest score is 71.4
D. The range is 55.3
19. What data are represented by the stem-and-leaf plot below?
Key: 1 | 3 means 13
A. 11, 31, 91, 32, 82, 92, 63, 83
C. 1, 3, 9, 3, 8, 9, 6, 8
B. 11, 13, 19, 32, 82, 92, 63, 83
D. 11, 13, 19, 23, 28, 29, 36, 38
20. Mrs. Hoffert drew a box-and-whisker plot to represent her students' scores on a midterm test. Mr.
Nowicki received an 81 on the test. Describe how his score compares with those of his classmates.
A. About 25% scored higher; about 75% scored lower.
B. About 75% scored higher; about 25% scored lower.
C. About 50% scored higher; about 50% scored lower.
D. None of the above.
Rio Unit 1 Assessment
21. Which histogram displays the data?
9, 11, 13, 13, 6, 16, 6, 6, 12, 7, 14, 9, 7, 14, 7, 11, 9, 8, 14, 16
A.
B.
C.
D.
22. Which box-and-whisker plot shows the data?
29, 28, 27, 22, 19, 29, 37, 21, 19, 38, 35, 30, 31, 35, 23
A
B
C
D
23. Mr. Logan's class and Ms. Morgan's class were competing to find which class could do the most
homework. They kept a record of their hours for four weeks. During the four weeks, which class
completed more hours of homework?
A. Mr. Logan's Class
C. They are the same
B. Ms. Morgan's Class
D. Cannot tell from the given information
Rio Unit 1 Assessment
24.
25.