he classified age distribution of employees of a company is given in the following table. Age group -20 20-24 24-28 28-32 32-36 36-40 40-44 44-48 48-52 52-56 56+ Number of employees 1 8 11 12 18 24 28 21 14 6 2 Which of the following is the mean of the ages, approximately?
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.
The classified age distribution of employees of a company is given in the following table.
|
Age group |
-20 |
20-24 |
24-28 |
28-32 |
32-36 |
36-40 |
40-44 |
44-48 |
48-52 |
52-56 |
56+ |
|
Number of employees |
1 |
8 |
11 |
12 |
18 |
24 |
28 |
21 |
14 |
6 |
2 |
Which of the following is the mean of the ages, approximately?
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