H 177500 l 70000 œ œ range 177500 70000 107500 œ

H 177,500 L 70,000 œ œ
Range 177,500 70,000 107,500 œ  œ
Width 107,500 6 17,916.67 œ ƒ œ
round up to 17,917
Full file at

Chapter 2 - Frequency Distributions and Graphs
9
20. continued
Limits Boundaries f
70,000 - 87,916 69,999.5 - 87,916.5 1
87,917 - 105,833 87,916.5 - 105,833.5 3
105,834 - 123,750 105,833.5 - 123,750.5 7
123,751 - 141,667 123,750.5 - 141,667.5 6
141,668 - 159,584 141,667.5 - 159,584.5 5
159,585 - 177,502 159,584.5 - 177,502.5
25
3
cf
Less than 69,999.5 0
Less than 87,916.5 1
Less than 105,833.5 4
Less than 123,750.5 11
Less than 141,667.5 17
Less than 159,584.5 22
Less than 177,502.5 25
21.
H 88 L 12 œ œ
Range 88 12 76 œ  œ
Width 76 9 8.4 round up to 9 œ ƒ œ
Limits Boundaries f
12 - 20 11.5 - 20.5 7
21 - 29 20.5 - 29.5 7
30 - 38 29.5 - 38.5 3
39 - 47 38.5 - 47.5 3
48 - 56 47.5 - 56.5 4
57 - 65 56.5 - 65.5 3
66 - 74 65.5 - 74.5 0
75 - 83 74.5 - 83.5 2
84 - 92 83.5 - 92.5
30
1
cf
Less than 11.5 0
Less than 20.5 7
Less than 29.5 14
Less than 38.5 17
Less than 47.5 20
Less than 56.5 24
Less than 65.5 27
Less than 74.5 27
Less than 83.5 29
Less than 92.5 30
22.
H 51.7 L 1.2 œ œ
Range 51.7 1.2 50.5 œ  œ
Width 50.5 5 10.1 round up to 11 œ ƒ œ
22. continued
Limits Boundaries f
0 - 10 -0.5 - 10.5 7
11 - 21 10.5 - 21.5 6
22 - 32 21.5 - 32.5 2
33 - 43 32.5 - 43.5 0
44 - 54 43.5 - 54.5
16
1
cf
Less than -0.5 0
Less than 10.5 7
Less than 21.5 13
Less than 32.5 15
Less than 43.5 15
Less than 54.5 16
23.
H 123 L 77 œ œ
Range 123 77 46 œ  œ
Width 46 7 6.6 or 7 œ ƒ œ
Limits Boundaries f
77 - 83 76.5 - 83.5 1
84 - 90 83.5- 90.5 1
91 - 97 90.5- 97.5 6
98 - 104 97.5- 104.5 14
105 - 111 104.5 - 111.5 8
112 - 118 111.5 - 118.5 1
119 - 125 118.5 - 125.5
32
1
cf
Less than 76.5 0
Less than 83.5 1
Less than 90.5 2
Less than 97.5 8
Less than 104.5 22
Less than 111.5 30
Less than 118.5 31
Less than 125.5 32
24.
H 3462 L 3 œ œ
Range 3462 3 3459 œ  œ
Width 3459 9 384.3 œ ƒ œ
round up to 385
Full file at

Chapter 2 - Frequency Distributions and Graphs
10
24. continued
Limits Boundaries f
3 - 387 2.5 - 387.5 33
388 - 772 387.5 - 772.5 11
773 - 1157 772.5 - 1157.5 3
1158 - 1542 1157.5 - 1542.5 2
1543 - 1923 1542.5 - 1923.5 0
1924 - 2312 1923.5 - 2312.5 0
2313 - 2697 2312.5 - 2697.5 1
2698 - 3082 2697.5 - 3082.5 0
3083 - 3467 3082.5 - 3467.5
5
1
1
cf
Less than 2.5 0
Less than 387.5 33
Less than 772.5 44
Less than 1157.5 47
Less than 1542.5 49
Less than 1923.5 49
Less than 2312.5 49
Less than 2697.5 50
Less than 3082.5 50
Less than 3467.5 51
25.
H 12.3 L 6.2 œ œ
Range 12.3 6.2 6.1 œ  œ
Width 6.1 7 0.87 round up to 0.9 œ ƒ œ
Limits Boundaries f
6.2 - 7.0 6.15 - 7.05 1
7.1 - 7.9 7.05 - 7.95 7
8.0 - 8.8 7.95 - 8.85 9
8.9 - 9.7 8.85 - 9.75 7
9.8 - 10.6 9.75 - 10.65 8
10.7 - 11.5 10.65 - 11.55 4
11.6 - 12.4 11.55 - 12.45
40
4
cf
Less than 6.15 0
Less than 7.05 1
Less than 7.95 8
Less than 8.85 17
Less than 9.75 24
Less than 10.65 32
Less than 11.55 36
Less than 12.45 40
26.
H 37.9 L 17.3 œ œ
Range 37.9 17.3 20.6 œ  œ
26. continued
Width 20.6 6 3.43 round up to 3.5 œ ƒ œ
Limits Boundaries f
17.3 - 20.2 17.25 - 20.25 4
20.3 - 23.2 20.25 - 23.25 6
23.3 - 26.2 23.25 - 26.25 18
26.3 - 29.2 26.25 - 29.25 8
29.3 - 32.2 29.25 - 32.25 6
32.3 - 35.2 32.25 - 35.25 7
35.3 - 38.2 35.25 - 38.25
50
1
cf
Less than 17.25 0
Less than 20.25 4
Less than 23.25 10
Less than 26.25 28
Less than 29.25 36
Less than 32.25 42
Less than 35.25 49
Less than 38.25 50
27. The percents add up to 101%. They
should total 100% unless rounding was used.
28.
Class f
0 1
1 4
2 5
3 7
4 4
5 4
6 3
7 3
8 5
9 5
No. Zero appears only once and 3 appears 7
times.
EXERCISE SET 2-2
1.
0
10
20
30
40
50
89.5-
98.5
98.5-
107.5
107.5-
116.5
116.5-
125.5
125.5-
134.5
I.Q.
frequency
Full file at

Chapter 2 - Frequency Distributions and Graphs
11
1. continued
0
20
40
60
85 94 103 112 121 130 139
I.Q.
frequency
0
20
40
60
80
100
120
89.5 98.5 107.5 116.5 125.5 134.5
I.Q.