The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated. the mean = 160 the range = 60 the mode = 165 the variance = 324 the median = 170. The distribution of weights in the above sample is
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 weights (in pounds) of a
sample of 36 individuals were
recorded and the following
statistics were calculated.
the mean = 160
the range
= 60
the mode = 165
the variance = 324
the
median = 170.
The distribution of weights in
the above sample is
Select one:
a. positively skewed
b. negatively skewed
c. Symmetrical
d. Asymptote
e. None of these
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