A researcher gathered data on hours of video games played by school-aged children and young adults. She collected the following data: 6. 11 17 11 14 17 6. 10 17 13 16 10 17 4 1 12 3 9 16 17 6. 13 3 15 12 11 17 16 17 17 8. 14 13 (a) Complete the frequency distribution for the data. Hours Frequency Relative Frequency 0-2 3-5 6-8 9-11 12-14 15-17
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.
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