Number of minutes per week Number of teenagers 0-99 26 100-199 32 200-299 65 300-399 75 400-499 60 500-599 42
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.
Q.3 Find the Median of the following Data.
|
Number of minutes per week |
Number of teenagers |
|
0-99 |
26 |
|
100-199 |
32 |
|
200-299 |
65 |
|
300-399 |
75 |
|
400-499 |
60 |
|
500-599 |
42 |
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