The accompanying data represent the homework scores for material on Polynomial and Rational Functions for a random sample of students in a college algebra course. Complete parts (a) through (h). (a) Construct a relative frequency distribution with a lower class limit of the first class equal to 30 and a class width of 10. (Type integers or decimals. Do not round.) E Click the icon to view the data. Relative Class Frequency D-0 6 College Algebra Homework Scores 37 67 78 84 91 49 68 79 84 92 55 73 79 85 92 60 73 79 85 93 60 76 79 85 94 65 76 79 87 96 66 78 82 89 97 67 78 82 89 98
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.
We create class Intervals and count the Frequencies for every class Interval.
To find Relative frequency we use the following formula,
Relative frequency= current frequency/total frequency
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