Calculate the correct expected cell value

Assignment Help Basic Statistics

Reference no: EM133181715

Question 1: Which ONE of the following is NOT a requirement for the chi square test?
The observed data consists of counts (whole numbers)
The observed cell (count) values must all be greater than 5
For a 2x2 table, two variables are present or absent in the same individuals
For NxM tables, two variables are present or absent in the same individuals in each of M samples

Question 2: The null hypothesis for a chi square test when you have a 2x2 table
(i.e. two variables) is .....
The two variables are associated
The two variables are correlated
The two variables are independent
Π₁= Π₂ = Π₃= Π₄

Question 3: Apart from the chi square test of independence and the chi square test of homogeneity, which ONE of the following is NOT an additional kind of chi square test?
The chi square test for goodness-of-fit
The chi square test for trend
The chi square test for equality of medians
McNemar's chi square test

Question 4: Which ONE of the following variables demonstrates ordinality of its
categories (and would, thus, be relatively unsuitable for a chi square or Fisher's exact test)?
School quintiles
Mining commodities (e.g. coal, gold etc...)
Health districts
Drugs used for treating high blood pressure

Question 5: If the null hypothesis is true, then calculate the correct expected cell value for the cell marked as "A" in the following 2x2 table.

		VARIABLE 2		ROW TOTALS:
		PRESENT	ABSENT
VARIABLE 1	PRESENT	"A"		100
VARIABLE 1	ABSENT			200
	COLUMN TOTALS:	120	180	300

Reference no: EM133181715

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