The gas mileages (in miles per gallon) for 2727 cars are shown in the frequency distribution. Approximate the mean of the frequency distribution. Gas Mileage (in miles per gallon) Frequency 3131dash–3636 88 3737dash–4242 99 4343dash–4848 44 4949dash–5454 66 The approximate mean of the frequency distribution is nothing. (Round to one decimal place as needed.)
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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The gas mileages (in miles per gallon) for
2727
cars are shown in the frequency distribution. Approximate the |
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Gas Mileage
(in miles per gallon)
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Frequency
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3131dash–3636
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88
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|
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3737dash–4242
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99
|
|
|
|
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4343dash–4848
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44
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|
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4949dash–5454
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66
|
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