1. Find the median of the following set of numbers. = B
45, 21, 54, 22, 65, 61
A) 54 B)49 1/2 C) 45 D)48 1/2
2. The following scores were recorded on a 100-point examination:
95, 75, 76, 86, 96, 71, 68, 81, 95, 76, 69, 82, 93, 88, 94
Find the mean and median final examination scores. =B
A) mean: 81; median: 83 C) mean: 82; median: 83
B) mean: 83; median: 82 D) mean: 83; median: 81
Use the following to answer questions 3-4:
3. Use the graph, showing the yearly food costs of a family.
In what year was the cost of food the greatest?
A) 2002 B) 2005 C) 2000 D) 2004
4. Use the graph, showing the yearly food costs of a family.
What was the cost in 1999?
A) $8,500 B) $9,000 C) $900 D) $500
Use the following to answer question 5:
5. The pie chart shows the distribution of a person's total yearly income of $36,000. Find the amount budgeted for utilities.= B
A) $1,800 B) $2,880 C) $3,600 D) $4,320
6. Find the mode of the following set of numbers.= C
11, 13, 13, 12, 11, 12, 13, 10, 14
A) 11, 12, and 13 B) No mode C) 13 D) 12
7. Fiona kept the following records of her phone bills for 12 months:
$47, $42, $56, $46, $63, $49, $47, $40, $58, $63, $51, $62
Find the mean and median of Fiona's monthly phone bills.
A) mean: $52, median: $50 C) mean: $50, median: $52
B) mean: $52, median: $48 D) mean: $48, median: $50
8. Find the five-number summary of the following set of numbers.
0.16, 0.08, 0.27, 0.20, 0.22, 0.32, 0.25, 0.18, 0.28, 0.27
A) 0.08, 0.18, 0.223, 0.27, 0.32 C) 0.08, 0.18, 0.225, 0.27, 0.28
B) 0.08, 0.18, 0.235, 0.27, 0.32 D) 0.08, 0.16, 0.23, 0.28, 0.32
9. Find the first and third quartiles, Q1 and Q3, of the following set of numbers. = C
14, 4, 13, 18, 8, 15, 8, 3, 11, 8
A) 4; 13 B) 4; 15 C) 8; 14 D) 3; 18
10. Construct a box-and-whisker plot for the set of numbers.
348, 234, 146, 384, 247, 487, 276, 221, 303
Use the following to answer question 11:
11. Use the bar graph, showing the attendance at a circus for 7 days in September, to find the day with the greatest attendance.
12. The following scores were recorded on a 100-point examination:
91, 85, 76, 86, 96, 51, 68, 92, 85, 72, 66, 88, 93, 82, 84
(a) Find the mean final examination score.
(b) Find the median final examination score.
(c) Is the mean or median a more useful representative of the final examination scores?
13. Place the following set of numbers in ascending order.
20, –7, 5, –5, 12, 4, 15
A) –7, –5, 4, 12, 5, 15, 20 C) –7, –5, 4, 5, 12, 15, 20
B) –7, 4, –5, 5, 12, 15, 20 D) 20, 15, 12, 5, 4, –5, –7
14. Find the reciprocal of
A) B) C) D)
15. Subtract
A) 4 B) –4 C) 4.4 D) –4.4
16. Find the reciprocal of
A) B) C) D)
17. Add
A) B) C) D)
18. Perform the indicated operation.
A) B) Undefined C) 5 D)
19. Multiply
A) B) C) D) 6
20. Add B
A) –10.26 B) 8.74 C) –8.74 D) 10.26
21. Subtract
22. Which of the following numbers are integers?
23. Multiply = -189
24. Find the reciprocal of = -1/6
25. Divide = -3
1. The median of the set of numbers 45, 21, 54, 22, 65, 61 is 49 1/2 (B).
2. The mean final examination score is 83 and the median final examination score is 82 (B).
3. The cost of food was the greatest in the year 2005 (B).
4. The cost in 1999 was $9,000 (B).
5. The amount budgeted for utilities is $2,880 (B).
6. The mode of the set of numbers 11, 13, 13, 12, 11, 12, 13, 10, 14 is 13 (C).
7. The mean of Fiona's monthly phone bills is $52 and the median is $50 (A).
8. The five-number summary of the set of numbers 0.16, 0.08, 0.27, 0.20, 0.22, 0.32, 0.25, 0.18, 0.28, 0.27 is 0.08, 0.18, 0.223, 0.27, 0.32 (A).
9. The first quartile, Q1, is 8 and the third quartile, Q3, is 14 (C).
10. The box-and-whisker plot for the set of numbers 348, 234, 146, 384, 247, 487, 276, 221, 303 looks like this:
____________
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11. The day with the greatest attendance at the circus in September is not provided.
12. (a) The mean final examination score is 82.87.
(b) The median final examination score is 85.
(c) The median is a more useful representative of the final examination scores as it is less affected by extreme values.
13. The set of numbers in ascending order is -7, -5, 4, 5, 12, 15 (B).
14. The reciprocal of -1/2 is -2.
15. Subtracting 6 from -10 gives -16 (A).
16. The reciprocal of -4/5 is -5/4 (B).
17. Adding -2 to -4 gives -6 (D).
18. The sum of 4.3 + (-7.8) is -3.5 (A).
19. Multiplying 1/2 with -12 gives -6 (D).
20. Adding -6.34 to 15.1 gives 8.76 (B).
21. The subtraction operation is not specified.
22. The numbers -3, 0, 2, and 5 are integers.
23. Multiplying -9 by 21 gives -189.
24. The reciprocal of 6 is 1/6 (C).
25. Dividing 9 by -3 gives -3.