28 - What is the standard deviation of the frequency series given below? si fi 2 1 4 3 5 5 7 4 9 2 a) 4.00 B) 2.36 NS) 1.95 D) 3.68 TO) 5.56
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.
28 - |
What is the standard deviation of the frequency series given below? si fi
2 1
4 3
5 5
7 4
9 2
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29 - |
The distribution of sales of fire extinguishers produced for factories is given below. Find the variance of the distribution. |
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