Find mean, median and mode of the following grouped data: Class intervals Frequency(?) 0-10 5 10-20 7 20-30 16 30-40 7 40-50 5 50-60 10
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.
Find mean, median and
Class intervals |
Frequency(?) |
0-10 |
5 |
10-20 |
7 |
20-30 |
16 |
30-40 |
7 |
40-50 |
5 |
50-60 |
10 |
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