(For Questions 1, 2, 3 and 4)There are25 students enrolled in Stat 200 course.Their scores on Test one is
written in following table 1.
86 52 69 74 64
83 73 78 77 78
58 88 64 73 71
98 75 78 90 83
72 91 81 85 64
1. (2 points) construct a frequency distribution on scores.
2. (3 points) Construct a relative frequency distribution test one scores repeated below:
3. (3 points) construct a histogram of the scores for the given frequency.
4. (2 points) Constructstemand leaf display for the scores in Table1.
5. (2 points) Give a5-number summary of the scores of the Test 1, and construct the corresponding box plot.
(For Questions 6, 7, &8)I have a collection of5 ancient gold coins.Their weights, in ounces,are 23.1, 18.6, 33.5, 12.4, and 27.1.
6. (2 points) what is the mean weight of my ancient gold coins?
7. (2 points)how do you consider this collection,a population or a sample? Why?
8. (2 points) what is the variance and standard deviation in weight of my coin collection?
9. (2 points) a mathematics department has 9 members.Their ages are 35, 45, 59, 63, 65, 28,34, 44, and 54.
(a) Find the mean age
(b) Will it be considered as parameter or statistic?
10. (3 points)the cost of five homes in a certain are a is given as below:
Which of the central tendency should be used?
(a) Mean(b) Median (c) Mid range (d) Mode
possible maximum scores are different in these two sections.We notice thatStudentA4in Section A andStudentB2in
Section B have the same numerical score.
Section A Student Score
Section B Student Score
A1 70 B1 15
A2 42 B2 61
A3 53 B3 48
A4 61 B4 90
A5 22 B5 85
A6 87 B6 73
A7 59 B7 48
—– —— B8 39
Explain your answer.
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