Dr Nick

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    Kaplan University
    Apr-2009 - Mar-2014

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    University of Santo Tomas
    Aug-2006 - Present

Category > Statistics Posted 10 Nov 2017 My Price 13.00

calculate critical value chi squared

 

The chi-square statistic is used to compare two categorical variables to see if they are related.

Calculating the statistic involves looking the figure up in the chi-square table. we shall need to know degrees of freedom and probability (both of which are usually supplied in the question).

Step 1: Calculate the number of degrees of freedom. This number may be given to you in the question. If not then the degrees of freedom equals the number of classes (categories) minus one. i.e. ##d.f.=k-1##

Step 2: Find the probability that the phenomenon we are investigating would occur by chance. This is usually stated in the question. In the sample question, we are given the probability of 5%, or 0.05.

Step 3: Look up degrees of freedom and probability in the chi-square table. One degree of freedom and 5 percent probability equals 3.84 in the chi-square table. This is your critical chi-square value.

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Dr Nick
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Status NEW Posted 10 Nov 2017 10:11 AM My Price 13.00

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