The following frequency table shows the results for the number of times a week a person reads a daily newspaper for a sample of 40 students at the University of Gerogia. No. of times 0 1 2 3 4 5 6 7 8 9 Frequency 6 2 8 6 3 4 3 4 2 2 a) find the mean, median, mode, standard deviation, Q1 and Q3 b) Based on sketching or using a software to make a graph, charactrize this distribution skewed to the left, right or symmetric. Explain
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.
The following frequency table shows the results for the number of times a week a person reads a daily newspaper for a sample of 40 students at the University of Gerogia.
No. of times 0 1 2 3 4 5 6 7 8 9
Frequency 6 2 8 6 3 4 3 4 2 2
a) find the
b) Based on sketching or using a software to make a graph, charactrize this distribution skewed to the left, right or symmetric. Explain.
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