FYI: This question is for a Psychology 226 course, Statistical Methods in Psychology You are told that the following data represents the weight, in pounds, of 3rd grade students: 67, 81, 59, 77, 72, 70, 69, 62, 54, 60, 58, 69. find the median find the mean find the iqr State shape of distribution based on your measures of central tendency
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.
FYI: This question is for a Psychology 226 course, Statistical Methods in Psychology
You are told that the following data represents the weight, in pounds, of 3rd grade students: 67,
81, 59, 77, 72, 70, 69, 62, 54, 60, 58, 69.
find the
find the mean
find the iqr
State shape of distribution based on your measures of
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You are told that the following data represents the weight, in pounds, of 3rd grade students: 67,
81, 59, 77, 72, 70, 69, 62, 54, 60, 58, 69.
To find the median, we need to arrange the data an ascending order.
54,58,59,60,62,67,69,69,70,72,77,81
Here, N=12.
so, median(Q2) =
=
=(6th+7th) observation.
=0.5*(67+69)
=68
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