Question 6: The frequency distribution below indicates the scores of 30 students who took the final exam for Math CSK 85 last semester. Construct the relative frequency table for the data. Scores Number of people Relative Frequency` 61-70 2 71-80 15 81-90 10 91- 100 3 Total Construct a histogram of the relative frequency distribution
Question 6: The frequency distribution below indicates the scores of 30 students who took the final exam for Math CSK 85 last semester.
- Construct the relative frequency table for the data.
|
Scores |
Number of people |
Relative Frequency` |
|
61-70 |
2 |
|
|
71-80 |
15 |
|
|
81-90 |
10 |
|
|
91- 100 |
3 |
|
|
Total |
|
|
- Construct a histogram of the relative frequency distribution
Question 7: Use the Box-and-Whisker plot to display the five-number summary of the following data: “ 47 28 39 51 33 37 59 24 33”
Question 8: A pair of fair dice is rolled.
- Make a list of all possible outcomes to determine the
sample space of this experiment.
- What is the probability that the sum of the two dice equals eight?
Question 9: The data set below is a sample of the speeds of 10 cars passing a construction site on a particular day. 59, 53, 50, 50, 57, 54, 51, 48, 33, 58.
- Is this data discrete or continuous? Explain your answer
- Find the mean and the median.
- Is there a
mode ? Why or why not?
Question 10: The following is a table of the ages, in months, (X) of 7 infants and the number of hours (Y) each slept in a day.
|
X |
1.5 |
2.0 |
7.0 |
5.0 |
4.5 |
6.0 |
9.0 |
|
Y |
15 |
14.5 |
13.5 |
13.0 |
14.0 |
11.5 |
12.5 |
- Draw a
scatter plot .
- Does this plot show a positive, negative, or no relationship between an infant’s age in months and the number of hours sleep?
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