Question

Calculate the sample variance and sample standard deviation for the following frequency distribution of heights in centimeters for a sample of 8-year-old boys. If necessary, round to one more decimal place than the largest number of decimal places given in the data.

Class | Frequency |
---|---|

116.1 - 120.0 | 35 |

120.1 - 124.0 | 33 |

124.1 - 128.0 | 39 |

128.1 - 132.0 | 48 |

132.1 - 136.0 | 14 |

What is the sample variance and sample standard deviation?

Answer #1

Calculate the sample mean and sample variance for the following
frequency distribution of heights in centimeters for a sample of
8-year-old boys. If necessary, round to one more decimal place than
the largest number of decimal places given in the data.
Heights in Centimeters
Class
Frequency
117.1 - 120.8
14
120.9 - 124.6
20
124.7 - 128.4
40
128.5 - 132.2
44
132.3 - 136.0
26

Calculate the sample standard deviation and sample variance for
the following frequency distribution of scores in a statistics
class. If necessary, round to one more decimal place than the
largest number of decimal places given in the data.
Scores
Class
Frequency
56 - 64
13
65 - 73
9
74 - 82
4
83 - 91
10
92 - 100
6

Calculate the sample standard deviation and sample variance for
the following frequency distribution of final exam scores in a
statistics class. If necessary, round to one more decimal place
than the largest number of decimal places given in the data.
Final Exam Scores
Class
Frequency
41 - 5241 - 52
1111
53 - 6453 - 64
66
65 - 7665 - 76
77
77 - 8877 - 88
1414
89 - 10089 - 100
99

Calculate the sample standard deviation and sample variance for
the following frequency distribution of final exam scores in a
statistics class. If necessary, round to one more decimal place
than the largest number of decimal places given in the data.
Final Exam Scores
Class
Frequency
51 - 6051 - 60
1010
61 - 7061 - 70
77
71 - 8071 - 80
1212
81 - 9081 - 90
1111
91 - 10091 - 100
1515

Calculate the sample standard deviation and sample variance for
the following frequency distribution of heart rates for a sample of
American adults. If necessary, round to one more decimal place than
the largest number of decimal places given in the data.
Heart Rates in Beats per Minute
Class
Frequency
61 -66
3
67 - 72
12
73 -78
8
79 - 84
9
85 - 90
8

Calculate the sample variance and sample standard deviation for
the following frequency distribution of heart rates for a sample of
American adults. If necessary, round to one more decimal place than
the largest number of decimal places given in the data.
Heart Rates in Beats per Minute
Class
Frequency
61 - 66
13
67 - 72
9
73 - 78
5
79 - 84
3
885 - 90
6

Calculate the sample variance and sample standard deviation for
the following frequency distribution of heart rates for a sample of
American adults. If necessary, round to one more decimal place than
the largest number of decimal places given in the data.
Heart Rates in Beats per Minute
Class
Frequency
61 - 66
12
67 - 72
13
73 - 78
6
79 - 84
14
85 - 90
12

Calculate the sample variance and sample standard deviation for
the following frequency distribution of heart rates for a sample of
American adults. If necessary, round to one more decimal place than
the largest number of decimal places given in the data.
61 -66 10
67 -72 6
73 -78 14
79 -84 5
85 -90 14

Calculate the sample mean and sample variance for the following
frequency distribution of hourly wages for a sample of pharmacy
assistants. If necessary, round to one more decimal place than the
largest number of decimal places given in the data.
Hourly Wages (in dollars)
Class
Frequency
8.76-10.5
32
10.51-12.25
25
12.26-14
44
14.01-15.75
16
15.76-17.5
16

Calculate the range, population variance, and population
standard deviation for the following data set. If necessary, round
to one more decimal place than the largest number of decimal places
given in the data. 2,3,4,5,6,7,8,9,10,11

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 2 minutes ago

asked 9 minutes ago

asked 17 minutes ago

asked 17 minutes ago

asked 23 minutes ago

asked 26 minutes ago

asked 50 minutes ago

asked 51 minutes ago

asked 55 minutes ago

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago