Question

Go to StatCrunch. Select the data for problem 55 in Section 3 of Chapter 2 (Heights of males)

HERE ARE THE HEIGHTS FROM STAT CRUNCH

67

76

69

68

72

68

65

63

75

69

66

72

67

66

69

73

64

62

71

73

68

72

71

65

69

66

74

72

68

69

Use the “summary data” function in StatCrunch to calculate the following (enter the correct answers in the chart below, round to hundredths if necessary)

n = |
Mean = |
Median = |

Maximum = |
Minimum = |
Range = |

Quartile 1 = |
Quartile 3 = |
Standard Deviation = |

**Part II**

Have StatCrunch construct a histogram using 5 classes. Export a picture of that histogram and copy that hereà |

Use this chart to determine the shape of the distribution. Enter that here: ________________________

Have StatCrunch construct a stem and leaf plot. Export a picture of that stem and leaf plot and copy that hereà |

Use this chart to determine if there is a mode or modes. If there is, enter the value(s) here ___________________

Have StatCrunch construct a boxplot. Export a picture of that boxplot and copy that hereà |

Use this chart to determine if there are any outliers. If there are any, enter their values here ______________________________

**Part III**

**Show formulas and all work for these:**

Calculate the CV or Coefficient of Variation for this distribution

Calculate the percentile of 75 in this distribution

Calculate the z-score of 75

Answer #1

Summary of data is as follows

n =sample size =30

Maximum =76

Minimum=62

Mean =68.999

Median =68.5

Mode =68

Standard deviation=3.561

Range = 14

Quartile 1=66

Quartile 3=72

Part III

Coefficient of variation (c.v)=sigma /mean *100

C.V =3.561/68.999*100

CV=0.05166

75 th percentile means third quartile (Q3)

Q3=size of 3/4 (n+1) th observation

Q3= size of 3/4 (30+1) th observation

Q3=size of 3/4*31 th observation

Q3= size of 23 .25 th observation

Q3=(23+24 )/2 th observation

Q3=72+72/2

Q3=72

Z score of 75 is 1.6877

A random sample of 30 male college students was selected, and
their heights were measured. The heights (in inches) are given
below.
73
66
68
70
69
69
69
66
68
70
72
74
73
71
71
72
69
68
66
73
74
72
68
71
67
73
66
73
69
72
(a) Complete the frequency distribution for the data. Make sure
to enter your answers for the relative frequency as decimals,
rounded to the nearest tenth.
Height
Frequency
Relative...

The following data values represent a sample of
the heights of female college basketball players. SHOW WORK.
Heights in Inches
65 66 66 67 68 68 68 69 69 69 69 70 71
72 72 72 73 75 75 75 75 76 76 76 76
a) Determine (to two decimal places) the mean height and sample
standard deviation of the heights.
b) Determine the z-score of the data value X = 75 to the
nearest hundredth.
c) Using results from...

The U.S. Open Golf Tournament was played at Congressional
Country Club, Bethesda, Maryland, with prizes ranging from $465,000
for first place to $5000. Par for the course is 70. The tournament
consists of four rounds played on different days. The scores for
each round of the 32 players who placed in the money (more than
$17,000) are given. The scores for the first round were as
follows.
71
65
67
73
74
73
71
71
74
73
71
70
75...

The accompanying frequency table shows the heights? (in inches)
of 130 members of a choir. a right parenthesis Find the median and
IQR. b right parenthesis Find the sample mean and sample standard
deviation. c right parenthesis Display these data with a histogram.
d right parenthesis Write a few sentences describing the
distribution of heights. frequency table of heights of choir
members. ?
Height Count
60 1
61 6
62 10
63 6
64 3
65 20
66 19
67...

-Can you use this data for the following questions? The
population standard deviation for heights for 3 inches. We can
assume this is the standard deviation for the population for WCCC
men.
65, 65, 70, 70, 70, 70, 70, 70, 70, 70, 71, 71,71,71,71,71, 66,
67, 67, 67, 67, 67, 67,67, 68, 68, 68, 69, 69, 69, 69, 69, 69, 72,
72, 72, 73, 73, 74, 74, 74, 74, 76, 76, 76, 77, 78
-In Spring 2020, we sampled _____...

6 Use 10 bins with the first
centered on 61 in. and of width 1 in.
Construct a histogram for the female
student height data in Exercise 6.2.8.
The female students in an undergraduate engineering core course
at ASU self-reported their heights to the nearest inch. The data
follow. Construct a stem-and-leaf diagram for the height data and
comment on any important features that you notice. Calculate the
sample mean, the sample standard deviation, and the sample median
of height.
62...

How strongly do physical characteristics of sisters and brothers
correlate? Here are data on the heights (in inches) of 12 adult
pairs:
Brother 71 68 66 67 70 71 70 73 72 65 66 70
Sister 69 64 65 63 65 62 65 64 66 59 62 64
a. Use your calculator or software to find the correlation and
the equation of the least-squares line for predicting sister’s
height from brother’s height. Make a scatterplot of the data, and
add...

StudentNO
Gender
Height in inchese
1
Female
63
2
Female
64.0
3
Male
67.0
4
Female
59
5
Male
60
6
Female
61
7
Female
62
8
Female
63
9
Female
63
10
Female
64
11
Male
64
12
Female
65
13
Female
65
14
Female
65
15
Female
65
16
Female
66
17
Female
66
18
Male
67
19
Male
67
20
Male
67
21
Female
67
22
Male
67
23
Male
67
24
Female
67.5
25
Male
68...

Braylon is interested in knowing how warm StarkVegas can be
during the spring. He decides to examine the high temperature of
StarkVegas during March. He chooses one year in history and records
a sample of the high temperature of 31 days during March. The data
he records is listed below (in °F):
26 52 63 70 75 96 39 57 66 72 76 44 57 67 73 77 49 59 67 73 82
49 61 67 74 86 50 63...

How long did real cowboys live? One answer may be found in the
book The Last Cowboys by Connie Brooks (University of New Mexico
Press). This delightful book presents a thoughtful sociological
study of cowboys in West Texas and Southeastern New Mexico around
the year 1890. Assume that a sample of 32 cowboys gave the
following years of longevity:
59 52 67 86 72 66 99 89 84 91 91
92 69 68 87 86 73 61 71 75 72...

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