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Fisher’s exact test can be used as a quick test for correlation between two variables X and Y , each of which has at least an ordinal scale of measurement. Divide the scatterplot of the N values of (X, Y ) with a vertical line at the median of X, and a horizontal line at the median of Y , and count the number of observations in each of the four quadrants. note that the row and column totals are N/2, and are not at random. Suppose 16 observations of X = age of marriage of a husband, and Y = age of marriage of his father, result in 7 pairs where both ages were above the median. Are the two variables positively correlated?

Fisher’s exact test can be used as a quick test for correlation between two variables X and Y , each of which has at least an ordinal scale of measurement. Divide the scatterplot of the N values of (X, Y ) with a vertical line at the median of X, and a horizontal line at the median of Y , and count the number of observations in each of the four quadrants. note that the row and column totals are N/2, and are not at random. Suppose 16 observations of X = age of marriage of a husband, and Y = age of marriage of his father, result in 7 pairs where both ages were above the median. Are the two variables positively correlated?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Fisher’s exact test can be used as a quick test for correlation between
two variables X and Y , each of which has at least an ordinal scale of
measurement. Divide the scatterplot of the N values of (X, Y ) with a
vertical line at the median of X, and a horizontal line at the median of Y ,
and count the number of observations in each of the four quadrants. note
that the row and column totals are N/2, and are not at random. Suppose
16 observations of X = age of marriage of a husband, and Y = age of
marriage of his father, result in 7 pairs where both ages were above the
median. Are the two variables positively correlated?

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