50 students at Holy Spirit High were interviewed to determine what sports they played, if any, and the results were as follows: 28 play basketball 21 play hockey 26 play soccer 16 play basketball and hockey 12 play hockey and soccer 15 play basketball and soccer 10 play all three sport How many students play none of these sports? 6 42
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.
50 students at Holy Spirit High were interviewed to determine what sports they played, if any, and the results were as follows:
28 play basketball
21 play hockey
26 play soccer
16 play basketball and hockey
12 play hockey and soccer
15 play basketball and soccer
10 play all three sport
How many students play none of these sports?
-
6
-
42
-
none of the above
-
8
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