Question
QUANTITATIVE METHODS ( I DONT WANT ANY WORKING METHODS I JUST NEED THE ANSWERS) 1.The following is the number of hours students worked per week
QUANTITATIVE METHODS ( I DONT WANT ANY WORKING METHODS I JUST NEED THE ANSWERS)
1.The following is the number of hours students worked per week at after-school jobs.
2 | 2 | 4 | 6 | 7 | 8 | 10 | 10 | 12 | 13 |
13 | 15 | 17 | 17 | 17 | 17 | 20 | 20 | 21 | 23 |
Use the data to complete the following frequency distribution.
Number of Hours | Frequency |
0 -4 |
|
5 9 |
|
10 14 |
|
15 19 |
|
20 - 24 |
|
- Frequency: 3, 3, 4, 6, 4
- Frequency: 3, 3, 5, 4, 5
- Frequency: 3, 3, 5, 5, 4
- Frequency: 3, 2, 6, 5, 4
2. The following is the number of hours students worked per week at after-school jobs.
2 | 2 | 4 | 6 | 7 | 8 | 10 | 10 | 12 | 13 |
13 | 15 | 17 | 17 | 17 | 17 | 20 | 20 | 21 | 23 |
Use the data to complete the following relative frequency distribution.
Number of Hours | Relative Frequency |
0 -4 |
|
5 9 |
|
10 14 |
|
15 19 |
|
20 - 24 |
|
- Relative frequency: 0.15, 0.15, 0.20, 0.30, 0.20
- Relative frequency: 0.15, 0.15, 0.25, 0.20, 0.25
- Relative frequency: 0.15, 0.15, 0.25, 0.25, 0.20
- Relative frequency: 0.15, 0.10, 0.30, 0.25, 0.20
3. The following data represents the number of Sony TVs sold per day at a particular Costco over a random sample of five business days.
9 2 7 7 5
The mode of this sample is _____
- 2
- 4
- 6
- 7
4. The following data represents the number of Sony TVs sold per day at a particular Costco over a random sample of five business days.
9 2 7 7 5
The range of this sample is _____
- 5
- 6
- 7
- 8
5. The ________ is the value that appears most often in a data set.
- mean
- median
- mode
- range
6. The ________ can be found by subtracting the lowest value from the highest value in the data set.
- standard deviation
- variance
- median
- range
7. Use the given frequency distribution to find the
(a) class width.
(b) class midpoints of the first class.
(c) class boundaries of the first class.
Height (inches) | |
Classes | Frequency |
50 - 52 | 5 |
53 55 | 8 |
56 58 | 12 |
59 61 | 13 |
62 64 | 11 |
(a) 3 (b) 51 (c) 50-52
(a) 3 (b) 51 (c) 49.5-52.5
(a) 2 (b) 51.5 (c) 50-52
(a) 2 (b) 51.5 (c) 49.5-52.5
8. Calculate the mean of the frequency distribution.
Kilometers (per day) | |
Classes | Frequency |
1 - 2 | 7 |
3 4 | 15 |
5 6 | 30 |
7 8 | 11 |
9 10 | 9 |
- 15.5
- 5.5
- 6.5
- 396
9. Calculate the standard deviation of the frequency distribution.
Kilometers (per day) | |
Classes | Frequency |
1 - 2 | 7 |
3 4 | 15 |
5 6 | 30 |
7 8 | 11 |
9 10 | 9 |
- 18.97
- 2.24
- 8.49
- 3.45
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