Here are the ages of 30 people who bought video recorders at music shop last week 26 20 22 37 32 26 40 15 44 18 27 41 14 46 34 45 44 55 32 62 50 68 58 63 31 30 29 37 42 22 Construct a frequency distribution table and find Mean.
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.
Here are the ages of 30 people who bought video recorders at music shop last week
|
26 |
20 |
22 |
37 |
32 |
26 |
|
40 |
15 |
44 |
18 |
27 |
41 |
|
14 |
46 |
34 |
45 |
44 |
55 |
|
32 |
62 |
50 |
68 |
58 |
63 |
|
31 |
30 |
29 |
37 |
42 |
22 |
Construct a frequency distribution table and find
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