he lollowing data give rouped frequency distribution, taking 5 as class-interval. 91 124 109 129 141 107 86 76 118 99 99 114 100 88 108 87 101 101 63 121 122 111 119 77 127 61 133 77 177 110 95 96 96 86 106 119 81 127 86 153 79 129 151 89 143 90 142 105 94 125 96 99 138 145 129 87 113 110 144 91 106 104 97 100 117 73 134 108 102 123 106 119 101 120 112 138 140 103 96 136 78
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.
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