The data below is a frequency distribution of the Intelligence Quotient (IQ) of 200 students taking up Behavioral Psychology and Business Statistics in a certain university: C. f 131- 135 7 126 - 130 10 121 - 125 14 116 - 120 35 111 - 115 42 106 - 110 21 101 - 105 18 96 - 100 29 91 - 95 10 86 - 90 14 n= 200 A Find the following: 7. Number of students whose 1Q is between 126 – 130 8. Lowest upper dass limit 9. Highest upper dlass limit
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.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
