Question: Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarized in the GFDT below. Lengths (mm)|Frequency
- Data was collected for 300 fish from the North Atlantic. The length of the fish (in mm) is summarized in the GFDT below.
Lengths (mm)|Frequency
120-139 | 1
140-159 | 16
160-179 | 71
180-199 | 108
200-219 | 83
220-239 | 18
240-259 | 3
What is the lower class boundary for the first class?
2.
220 people are asked how many siblings they have?
# of Siblings | Frequency | Relative Frequency | Cumulative frequency
0 | | 0.1909 |
1 | 47 | 0.2136 | 89
2 | 44 | 0.2 | 133
3 | 41 | 0.1864 | 174
4 | 46 | | 220
a. Complete the table (Use 4 decimal places when applicable)
b.What percent of the people have exactly one sibling?
3.
70 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below:
# of times floss per week | Frequency | Relative Frequency | Cumulative frequency
0 | 5 | 0.0714 | 5
1 | 7 | 0.1 | 12
2 | | 0.0714 | 17
3 | 7 | | 24
4 | 10 | 0.1429 |
5 | 15 | 0.2143 | 49
6 | 16 | 0.2286 | 65
7 | 5 | 0.0714 | 70
a.Complete the table (Use 4 decimal places when applicable)
b.What is the cumulative relative frequency for flossing 6 times per week?
4.
50 part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below:
# of courses | Frequency | Relative Frequency | Cumulative frequency
1 | 24 | 0.48 |
2 | 16 | |
3 | | |
5.
Ages | Number of students
15-18 | 6
19-22 | 7
23-26 | 2
27-30 | 2
31-24 | 2
35-38 | 5
Find the relative frequency for the class with lower class limit 15
Relative Frequency =____%
Give your answer as a percent, rounded to two decimal places
6.
The following data represents the age of 30 lottery winners.
21, 29, 32, 38, 38, 41
42, 44, 50, 50, 51, 53
53, 57, 57, 59, 59, 60
61, 61, 61, 62, 62, 63
64, 66, 68, 69, 70, 82
Complete the frequency distribution for the data.
Ages | Number of students
20-29 |
30-39 |
40-49 |
50-59 |
60-69 |
70-79 |
80-89|
7.
In a student survey, forty-one part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below:
Please round your answer to 4 decimal places for the Relative Frequency if possible.
# of courses | Frequency | Relative Frequency | Cumulative frequency
1 | 16 | 0.3902 |
2 | | 0.3659 | 31
3 | 10 | | 41
What percent of students take exactly two courses?
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