Question
In: Statistics and Probability
A manufacturer of insulation randomly selects 20 winter days and records the daily high temperature as...
A manufacturer of insulation randomly selects 20 winter days and records the daily high temperature as follows: 58,61,63,64,66,67,68,69,70,75, 76,77,77,78,79,81,82,86,85,87,88,92,93,94,99. Use as a first class 58 – 63.
|
a. |
Construct a relative frequency distribution. |
|
b. |
Construct a cumulative frequency distribution. |
|
c. |
Construct a cumulative relative frequency distribution. |
Solutions
Expert Solution
The frequency, Relative frequency, Cumulative frequency distribution, and the cumulative relative frequency distribution is tabulated as:
| Class | Frequency | Relative Frequency | Cumulative relative frequency | Cumulative frequency |
| 58-63 | 3 | 0.12 | 0.12 | 3 |
| 64-69 | 5 | 0.2 | 0.32 | 8 |
| 70-75 | 2 | 0.08 | 0.4 | 10 |
| 76-81 | 6 | 0.24 | 0.64 | 16 |
| 82-87 | 4 | 0.16 | 0.8 | 20 |
| 88-93 | 3 | 0.12 | 0.92 | 23 |
| 94-99 | 2 | 0.08 | 1 | 25 |
=> The frequency is the no if element or values occurring in the given class.
=> The Relative frequency is the value of a class is the relative value of the frequency with respect to the total no of values, it is calculated as the class frequency / Total frequency.
=> The Cumulative relative frequency is the running sum of the relative frequency, it is calculated as the sum of => current class relative frequency and the sum of all previous class relative frequencies.
=> The Cumulative frequency is the running sum of the frequency, it is calculated as the sum of current class frequency and the sum of all previous class relative frequencies.
orchestra answered 2 years agoRelated Solutions
A manufacturer of insulation randomly selects 20 winter days and records the daily high temperature as...
A manufacturer of insulation randomly selects 20 winter days and
records the daily high temperature as follows:
58,61,63,64,66,67,68,69,70,75,
76,77,77,78,79,81,82,86,85,87,88,92,93,94,99. Use as a first class
58 – 63.
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Construct a relative frequency distribution.
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Construct a cumulative relative frequency distribution.
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A researcher randomly selects 6 fathers who have adult sons and
records the fathers' and sons' heights to obtain the data shown
in the table below. Test the claim that sons are taller than their
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1
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3
4
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6
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Suppose that National Motors randomly selects a sample of n = 91 ZX-900s. The company records...
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1. Conduct hypothesis test
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23
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32
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Use a 0.05 level of significance to determine whether there is a
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State the...
Police records show the following numbers of daily crime reports for a sample of days during...
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17
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15
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34
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17
20
28
14
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37
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20
17
Use a 0.05 level of significance to determine whether there is a
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