A sample with a mean of m=8 has sum of x=56. How many scores are in the sample? B) Find the mean for the scores in the following frequency distribution table: x F 6 1 5 4 4 2 3 2 2 1 1 0 The mean (in two decimal places)__________ C) in a sample of n=6 scores, five of the scores are each above the mean by one point. Where is the sixth score located relative to the mean. The sixth score is equal, above or below the mean and by how many points?
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.
A) A sample with a
B) Find the mean for the scores in the following frequency distribution table:
x F
6 1
5 4
4 2
3 2
2 1
1 0
The mean (in two decimal places)__________
C) in a sample of n=6 scores, five of the scores are each above the mean by one point. Where is the sixth score located relative to the mean.
The sixth score is equal, above or below the mean and by how many points?
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