The final grades of a student in his subjects where he was enrolled were taken and shown below. Subject No. of Units Final grade Math 1 3 2.5 Lab Science 5 1.5 English 1 3 2.25 Com Lab 2 3.0 Filipino 3 2.25 Accounting 1 6 2.5 a.Determine his weighted mean grade. b.If the subjects were of equal number of units, what would be his average?
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.
4. The final grades of a student in his subjects where he was enrolled were taken and shown below.
Subject No. of Units Final grade
Math 1 3 2.5
Lab Science 5 1.5
English 1 3 2.25
Com Lab 2 3.0
Filipino 3 2.25
Accounting 1 6 2.5
a.Determine his weighted mean grade.
b.If the subjects were of equal number of units, what would be his average?
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