30. Below is the number of hand-washing episodes 20 patients with obsessive-compulsive disorder reported having the previous day: 21, 8, 11, 9, 12, 10, 19, 5, 9, 18, 17, 3, 6, 14, 18, 16, 19, 3, 27, 7 a. Would it be better to display this data using a simple frequency distribution data or a grouped frequency distribution table? Explain. b. Suppose you need to create a grouped frequency distribution table for this data. Create a GFDT with five intervals. c. Which interval had the largest frequency?
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.
30. Below is the number of hand-washing episodes 20 patients with obsessive-compulsive
disorder reported having the previous day:
21, 8, 11, 9, 12, 10, 19, 5, 9, 18,
17, 3, 6, 14, 18, 16, 19, 3, 27, 7
a. Would it be better to display this data using a simple frequency distribution data or a grouped frequency distribution table? Explain.
b. Suppose you need to create a grouped frequency distribution table for this data. Create a GFDT with five intervals.
c. Which interval had the largest frequency?
The observations are:
21, 8, 11, 9, 12, 10, 19, 5, 9, 18, 17, 3, 6, 14, 18, 16, 19, 3, 27, 7
n=20
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