B. Consider the data below; this is taken from our examples above. Class Interval Frequency () (Scores) 0-2 3-5 4. 6-8 10 9-11 13 12-14 17 15 - 17 6. 18 - 20 8 Total = 60 Determine the following and write a brief interpretation of the results in Cfp 1. Q1 = LB+ fq 3n -Cfp 2. Q3 LB + %3D 4 fa [2n Cfp C ob 3. D2 = LB + 10 %3D fd nilgms 25n 4. Р25 LB + Cfp C 100 fp
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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