Project #81004 - STATISTICS

(For Questions 1, 2, 3 and 4) There are 25 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:

scores

Frequency

50-59

3

60-69

4

70-79

12

80-89

6

90-99

4

3. (3 points) construct a histogram of the scores for the given frequency.

 

 

 

 

4. (2 points) Construct stem and leaf display for the scores in Table 1.

 

 

 

5. (2 points) Give a 5-number summary of the scores of the Test 1, and construct the corresponding boxplot.

 

 

 

 

(For Questions 6, 7, & 8) I have a collection of 5 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) a:

$148,000, $158,000, $185,000, $138,000 𝑎nd $125,000

 

 

Which of the central tendency should be used?
(a) Mean (b) Median (c) Midrange (d) Mode

 

 

11. (7 points) Below is a summary of the Quiz 1 for two sections of STAT 200 last spring. The questions and possible maximum scores are different in these two sections. We notice that Student A4 in Section A and Student B2 in 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

How do these two students stand relative to their own classes? And, hence, which student performed better? Explain your answer.

 

Subject Mathematics
Due By (Pacific Time) 09/05/2015 11:59 pm
Report DMCA
TutorRating
pallavi

Chat Now!

out of 1971 reviews
More..
amosmm

Chat Now!

out of 766 reviews
More..
PhyzKyd

Chat Now!

out of 1164 reviews
More..
rajdeep77

Chat Now!

out of 721 reviews
More..
sctys

Chat Now!

out of 1600 reviews
More..
sharadgreen

Chat Now!

out of 770 reviews
More..
topnotcher

Chat Now!

out of 766 reviews
More..
XXXIAO

Chat Now!

out of 680 reviews
More..
All Rights Reserved. Copyright by AceMyHW.com - Copyright Policy