MAT-127-Midterm Review -Part 1 - Ch. 1,2,3
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Union County College *
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127
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Mathematics
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Apr 3, 2024
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MAT 127 Midterm Review – Part 1 – Ch. 1, 2 & 3 Please read the following paragraph carefully before you precede on this review.
To attend the review class, you MUST finish this review packet. You will be asked to leave the classroom, and complete your review packet in the ALC, if you don't finish it. Please be advised that you will be marked as ABSENT if you are asked to leave the class and finish your review in the ALC. Such status will be removed only after the Weekly ALC Report (on that week) shows that you
are in the ALC during this period. You must stay in the ALC until the end of that class meeting time.
1
MAT 127 Midterm Review – Ch. 1-3 Part 1 – Multiple Choice
All from WebAssign.
All the Question ID are on the upper right corner of each question in WebAssign.
Ch. 1
– Ch. 1 Homework – All
Ch. 2
– Ch. 2 Homework – 2.2.004, 2.3.001(b),
Ch. 3
– Ch. 3 Homework – 3.1.001,
3.1.009, 3.1.018, 3.2.001,
3.2.002, 3.2.003, 3.2.004.
Part 2 – Open Ending Questions 1. The Highway Patrol, using radar, checked the speeds (in mph) of 30 passing motorists at a checkpoint. The results are listed below:
44
38
41
50
36
36
43
42
49
48
35
40
37
41
43
50
45
45
39
38
50
41
47
36
35
40
42
43
48
33
(a) Construct a frequency distribution
using 5
classes.
Class
Class Boundaries
Lower - Upper
Class
Midpoint
Frequency
Relative
Frequency
Cumulative
Frequency
2
(b) Construct a frequency histogram
by using the midpoints for the distribution above.
(c) Construct a relative frequency histogram
by using the midpoints for the distribution above.
(d) Construct an ogive
for the distribution above. 3
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2. Find the mean
, median
and the mode
.
3, 7, 6, 7, 8, 4, 3, 5, 5, 8.
(a) Mean = __________
(b)Median = ____________
(c) Mode = ____________
3. Find the sample
variance
and the standard deviation
of the data set (round to hundredth place value).
4, 7, 2, 6, 11.
(1) Find the range: ____________
(2) Find the sample variance: _____________
(3) Find the sample standard deviation: _______________
4. Find the population
variance
and the standard deviation
of the data set (round to hundredth place value).
4, 7, 2, 6, 11.
(4) Find the range: ____________
(5) Find the population variance: _____________
(6) Find the population standard deviation: _______________
4
5. Consider population data with Find the coefficient of variation.
6. Consider sample data with Find the coefficient of variation.
7. For the following data.
31 41 62 56 70 75 63 65 70 79 76 54 65 89
(a)
Find the five-number summary.
Minimum = _____________
____________
____________
____________
Maximum = _____________
(b)
Find the interquartile range.
IQR = _____________
(c) Draw a box-and –whisker plot.
5
8. Use the stem-and-leaf plot to list the data.
9
9
4
11
10
25
13
9
7
11
6
42 14
10
6
10
10
3
14
11
7
8
26
13
10
14
1
48
13
10
8
24
27
18
9. Use the dot plot to list the data.
19
18
17
21
22
18
16
18
17
30
21
18
17
6
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