Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of 57.2 degrees. Low Temperature (◦F) 40−44 45−49 50−54 55−59 60−64 Frequency 2 5 9 7 3
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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Low Temperature
(◦F)
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40−44
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45−49
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50−54
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55−59
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60−64
|
|
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Frequency
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2 | 5 | 9 | 7 | 3 | |
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