Question

For the Spurs basketball team, scores for the last 50 games since 01/02/2018 game are listed below. By using only scores with two digits, construct a stem and leaf plot for the data: | |||||||||||||||||||

100 | 106 | 103 | 110 | 107 | 81 | 112 | 99 | 100 | 83 | 86 | 114 | 108 | 78 | 113 | 106 | 91 | 111 | 129 | 105 |

99 | 109 | 119 | 110 | 116 | 112 | 100 | 107 | 94 | 93 | 108 | 98 | 117 | 89 | 98 | 124 | 103 | 106 | 103 | 100 |

110 | 112 | 116 | 98 | 98 | 92 | 101 | 97 | 103 | 91 | (Scores extracted from Spurs.com) | |||||||||

f. By using all 50 scores, what is the standard deviation? | |||||||||||||||||||

g. By using all 50 scores, find the value that is 2 standard deviations below the mean? | |||||||||||||||||||

h. By using only scores with 2 digits from your plot, what is the mean? | |||||||||||||||||||

i. By using only scores with 2 digits from your plot, what is the standard deviation? | |||||||||||||||||||

j. By using only scores with 2 digits from your plot, find the value that is 1 standard deviation above the mean? | |||||||||||||||||||

7 | 8 | ||||||||||||||||||

8 | 1369 | ||||||||||||||||||

9 | 12347888899 |

Answer #1

By using all 50 scores, what is the standard deviation?

Answer is 10.61

Formula in excel : =STDEV(A1:T2,A3:J3)

By using all 50 scores, find the value that is 2 standard deviations below the mean?

2nd standard deviation below = mean - 2standard deviation = 103.3 - 10.61 - 10.61 = 82.08

MEan = 103,3

By using only scores with 2 digits from your plot, what is the standard deviation?

Stem | Leaf |

7 | 1 |

8 | 1 3 6 9 |

9 | 1 1 2 3 4 7 8 8 8 8 9 9 |

10 | 0 0 0 0 1 3 3 3 3 5 6 6 6 7 7 8 8 9 |

11 | 0 0 0 1 2 2 2 3 4 6 6 7 9 |

12 | 4 9 |

MEan value with 2 digit is 108.88

By using only scores with 2 digits from your plot, what is the standard deviation?

Answer is 6.95

By using only scores with 2 digits from your plot, find the value that is 1 standard deviation above the mean

1st standard deviation above = mean + standard deviation = 108.88+ 6.95 = 115.83

The IQ scores of 50 students are given below.
117
85
108
86
104
110
90
116
101
113
116
111
108
112
97
115
86
110
119
87
95
99
116
98
110
115
99
114
100
88
92
106
96
103
108
85
94
96
113
98
108
88
95
96
115
106
93
92
115
101
(a) Construct a grouped frequency distribution for the data. Use
85-89 for the first class and use the same width for...

Problem: The IQ test scores of 45 seventh-grade girls
in a Midwest school district are below.
111
107 100
107 115
111
97
112
104
106 113
109 113
128 128
118
113 124
127 136
106 123
124
126
116 127
119
97
102 110
120
103 115
93
123
79
119 110
110
107 105
105 110
77 90
Here are the IQ test scores of 30 seventh-grade boys in the same
school district. Is there good evidence...

We are interested in the mean IQ score of seventh-grade girls in
a Midwest school district. Here are the scores for 31 randomly
selected seventh-grade girls in the district:
114 100 104 89 102 91 114 114 103 105
108 130 120 132 111 128 118 119 86 72
111 103 74 112 107 103 98 96 112 112 93
These scores follow a Normal distribution with standard deviation σ
= 15. Treat these 31 girls as an SRS of...

Each of the following three datasets
represent IQ Scores for three random samples of different sizes.
The
population mean is 100 population
standard deviation is 15. Compute the sample mean, median and
standard deviation for each sample size:
9) Using the Sample From Problem Eight Above Calculate the Mean
of the Sample Means of The Following: Random Sample1 106 98 102 140
103
Random Sample2 092 124 087 093 097
Random Sample3 098 083 121 130 089
Random Sample4 103...

A fast-food franchiser is considering building a restaurant at a
certain location. Based on financial analyses, a site is acceptable
only if the number of pedestrians passing the location averages
more than 100 per hour. The number of pedestrians observed for each
of 40 hours was recorded. Assuming that the population standard
deviation is known to be 16, Estimate with 95% confidence the mean
number of pedestrians passing the location. Can we conclude at the
5% significance level that the...

*******please don't copy and paste and don't use handwriting
****
Q1:
Using the below given ASCII table (lowercase letters) convert
the
sentence “welcome to cci college” into binary
values.
a - 97
b - 98
c - 99
d - 100
e - 101
f - 102
g - 103
h - 104
i - 105
j - 106
k - 107
l - 108
m - 109
n - 110
o - 111
p - 112
q - 113...

Provide answers for each prompt.
Scatter plot (copy and paste)
Find correlation coefficient using Excel
Find means and standard deviations of Reading score and Math
score.
Interpret the result (regarding the correlation).
Reading score
Math score
45
102
40
100
48
106
45
101
38
98
43
100
36
92
41
102
42
102
50
110
43
104
50
108
42
96
40
99
41
96
48
102
47
104
37
94
42
98
45
100
Reading Score Mean=
Math...

A random sample of 36 seventh grade students in Harvard are
given a test on a reading test. Below are their raw scores.
73, 77, 80, 80, 84, 86, 91, 93, 93, 93, 94, 97, 100, 100, 103,
103, 104, 105, 105, 106, 108, 110, 111, 117. 120, 120, 123, 124,
126, 128, 129, 129, 130, 130, 136
Sample mean = 105.97
Sample standard deviation = 17.18
Nationally 30% of the students score 110 points or higher on
this test....

Given Data:
(1)= low lead level (2)= medium lead level, (3)= high lead
level
IQ: 85 (1), 94 (1), 97 (1), 86 (1), 86 (1), 107 (1), 91 (1), 99
(1), 115 (1), 50 (1), 93 (1), 98 (1), 100 (1), 94 (1), 73 (1), 76
(1), 72 (1), 76 (1), 95 (1), 89 (1), 96 (1), 108 (1), 74 (1), 72
(2), 90 (2), 100 (2), 91 (2), 98 (2), 91 (2), 85 (2), 97 (2), 91
(2), 78...

Given Data:
(1)= low lead level (2)= medium lead level, (3)= high lead
level
IQ: 85 (1), 94 (1), 97 (1), 86 (1), 86 (1), 107 (1), 91 (1), 99
(1), 115 (1), 50 (1), 93 (1), 98 (1), 100 (1), 94 (1), 73 (1), 76
(1), 72 (1), 76 (1), 95 (1), 89 (1), 96 (1), 108 (1), 74 (1), 72
(2), 90 (2), 100 (2), 91 (2), 98 (2), 91 (2), 85 (2), 97 (2), 91
(2), 78...

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