This year’s group of high school students did poorly on their final exams (M = 69, s = 11.3), because of a glitch in the computer software that was used to administer the exams. Their teacher decided to add 13 points to every student’s score. What is the new mean and standard deviation?
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.
This year’s group of high school students did poorly on their final exams (M = 69, s = 11.3), because of a glitch in the computer software that was used to administer the exams. Their teacher decided to add 13 points to every student’s score. What is the new
Given information-
We have given the mean and standard deviation of the high school students final exams score.
M = 69, s = 11.3
Because of a glitch in the software their teacher decided to add 13 points to every student’s score.
So, we have to find new mean and standard deviation.
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