An insurance company is looking over accident statistics. They want to model the population of all drivers for the population parameter of the standard deviation and variance of the age of the driver involved in an automobile accident. They have a sample of 100 accidents from around the country. The age of the driver in each of these accidents is provided below. Use Excel to calculate the sample standard deviation and the sample variance. Round your answers to one decimal place. Do not round until you've calculated your final answer "Age of people in accident"48643346436728189044472440202747683248472248217347302918487364454920205066654187873417203176493089672222455023481746382942254720463119214227226621236675744621461969202048238851284918204522313823284939 Standard deviation: Variance:
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
An insurance company is looking over accident statistics. They want to model the population of all drivers for the population parameter of the standard deviation and variance of the age of the driver involved in an automobile accident. They have a sample of 100 accidents from around the country. The age of the driver in each of these accidents is provided below.
Use Excel to calculate the sample standard deviation and the sample variance.
Round your answers to one decimal place. Do not round until you've calculated your final answer
"Age of people in accident"
48
64
33
46
43
67
28
18
90
44
47
24
40
20
27
47
68
32
48
47
22
48
21
73
47
30
29
18
48
73
64
45
49
20
20
50
66
65
41
87
87
34
17
20
31
76
49
30
89
67
22
22
45
50
23
48
17
46
38
29
42
25
47
20
46
31
19
21
42
27
22
66
21
23
66
75
74
46
21
46
19
69
20
20
48
23
88
51
28
49
18
20
45
22
31
38
23
28
49
39
Standard deviation:
Variance:
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