Question

A student representative studied the amount of money (in RM), School of Computing (SC) students spend on online game for a week, and the result is as follows: 23 60 79 32 57 74 52 70 82 36 80 77 81 95 41 65 92 85 55 76 52 10 64 75 78 25 80 98 81 67 41 71 83 54 64 72 88 62 74 43 60 78 89 76 84 48 84 90 15 79 34 67 17 82 69 74 63 80 85 61 (a) Construct a frequency distribution table as in Table 2 for the grouped data. (Hint: Use 10 class intervals, beginning with lower class limit of 9 and class width of 9). Table 2 Cumulative Relative Cumulative Class Frequency Frequency Frequency Relative Frequency 9 - 17 (b) Draw a histogram to show the frequency distribution for your answer in (a). (c) Plot another graph (a relative ogive) based on your answer in (a). (d) Do you think SC students spend too much money on online games? Why?

          A student representative studied the amount of money (in RM), School of Computing (SC)
students spend on online game for a week, and the result is as follows:
23
60
79
32
57
74
52
70
82
36
80
77
81
95
41
65
92
85
55
76
52
10
64
75
78
25
80
98
81
67
41
71
83
54
64
72
88
62
74
43
60
78
89
76
84
48
84
90
15
79
34
67
17
82
69
74
63
80
85
61
(a) Construct a frequency distribution table as in Table 2 for the grouped data.
(Hint: Use 10 class intervals, beginning with lower class limit of 9 and class width of 9).
Table 2
Cumulative
Relative
Cumulative
Class
Frequency
Frequency
Frequency
Relative
Frequency
9 - 17
(b) Draw a histogram to show the frequency distribution for your answer in (a).
(c) Plot another graph (a relative ogive) based on your answer in (a).
(d) Do you think SC students spend too much money on online games? Why?

Show more…

A student representative studied the amount of money (in RM), School of Computing (SC)
students spend on online game for a week, and the result is as follows:
23
60
79
32
57
74
52
70
82
36
80
77
81
95
41
65
92
85
55
76
52
10
64
75
78
25
80
98
81
67
41
71
83
54
64
72
88
62
74
43
60
78
89
76
84
48
84
90
15
79
34
67
17
82
69
74
63
80
85
61
(a) Construct a frequency distribution table as in Table 2 for the grouped data.
(Hint: Use 10 class intervals, beginning with lower class limit of 9 and class width of 9).
Table 2
Cumulative
Relative
Cumulative
Class
Frequency
Frequency
Frequency
Relative
Frequency
9 - 17
(b) Draw a histogram to show the frequency distribution for your answer in (a).
(c) Plot another graph (a relative ogive) based on your answer in (a).
(d) Do you think SC students spend too much money on online games? Why?

Added by Nathan W.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Thanks for your feedback!

A student representative studied the amount of money in RM that School of Computing (SC) students spend on online games for a week, and the results are as follows: 23 80 52 41 60 34 60 77 10 71 78 67 79 81 64 83 89 17 32 95 75 54 76 82 57 41 78 64 84 69 74 65 25 72 48 74 52 92 80 88 84 63 70 85 98 62 90 80 82 55 81 74 15 85 36 76 67 43 79 61 (a) Construct a frequency distribution table as in Table 2 for the grouped data. Hint: Use 10 class intervals, beginning with a lower class limit of 9 and a class width of 9. Table 2 Class Frequency Cumulative Frequency Relative Frequency Cumulative Relative Frequency 9-17 18-26 27-35 36-44 45-53 54-62 63-71 72-80 81-89 90-98 (b) Draw a histogram to show the frequency distribution for your answer in (a). (c) Plot another graph, a relative ogive, based on your answer in (a).

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Transcript

00:01 Let's construct a frequency and relative frequency distribution for the data that's given.

00:06 So the first thing i need to do is tally up what the scores are.

00:10 So i'm going to do that real quick here, and so i need one more class.

00:15 I didn't put all of them in here.

00:17 And i'm following the directions here.

00:19 They want the lower class limit to be 49 .5, which means we're going to actually start at 50, and then you have a class width of 10, excuse me.

00:29 So now when i tally this up, i get 90, 81, 84, 75, 78, 73, 76, 66, 66, 66, 66, so 68, let me go ahead and do it this way, 63, then i have 58, 56, 56, 54, 54, 54, 55, 53, and i have 58, 58, 54, 54, 55.

01:02 55, 55, 55, and 54.

01:06 Which means my frequency then is going to end up being 10, 8, 4, 2, and 1.

01:16 So if we want to know relative frequencies, we're looking at how many people? 18, 22, 24, 25 people.

01:25 So for the relative frequencies, i'm going to take each one of these, put it over the total, and multiply by 100.

01:32 So from our relative frequencies, i'm going to do that for each one, and we're going to end up with, let me come over here, that's going to be 40%, this is going to be 32%, 16%, 8%, and 4%.

01:49 Now we want us to complete, we've completed this, now it wants to get a histogram for the data.

02:00 It says, which is the following is the correct histogram for the data...

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