Set up a frequency distribution table and calculate the relative frequency for the following quiz scores that Matt achieved in his Algebra course: Matt’s Quiz Scores: 87, 88, 92, 79, 100, 76, 61, 60, 79, 99, 100, 69, 98, 87, 92, 79, 81, 85, 100, and 100. Use the following frequency intervals: 60 – 70 70 – 80 80 - 90 90 – 100 Calculate the variance and standard deviation for Matt’s quiz scores. Suggestion: set the problem up in steps within a table like the textbook illustrates.
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.
Set up a frequency distribution table and calculate the relative frequency for the
following quiz scores that Matt achieved in his Algebra course:
Matt’s Quiz Scores: 87, 88, 92, 79, 100, 76, 61, 60, 79, 99, 100, 69, 98, 87, 92, 79, 81, 85,
100, and 100.
Use the following frequency intervals:
60 – 70
70 – 80
80 - 90
90 – 100
Calculate the variance and standard deviation for Matt’s quiz scores.
Suggestion: set the problem up in steps within a table like the textbook illustrates.
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