Two scores, X and Y, are recorded for each of n=4 participants. Find the value of each expression below. (this is everything included) Subject X Y A 8 5 B 2 4 C 2 9 D 5 3 a. ∑Y = b. ∑Y2 = c. (∑X)2 = d. ∑ (X * 3) = e. ∑X - 8 = f. ∑XY =
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.
Two scores, X and Y, are recorded for each of n=4 participants. Find the value of each expression below. (this is everything included)
Subject X Y
A 8 5
B 2 4
C 2 9
D 5 3
a. ∑Y =
b. ∑Y2 =
c. (∑X)2 =
d. ∑ (X * 3) =
e. ∑X - 8 =
f. ∑XY =
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