What is X if a student wants to have a final score of 81.5 percent? Test A Test B Test C Homework Class Activity Final Exam Weighted Score .18 .18 .18 .11 .10 .25 Points possible 100 100 100 120 140 200 Actual Test scores 77 83 91 90 119 X
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.
What is X if a student wants to have a final score of 81.5 percent?
|
|
Test A |
Test B |
Test C |
Homework |
Class Activity |
Final Exam |
Weighted Score |
.18 |
.18 |
.18 |
.11 |
.10 |
.25 |
|
Points possible |
100 |
100 |
100 |
120 |
140 |
200 |
|
Actual Test scores |
77 |
83 |
91 |
90 |
119 |
X |
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
