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# Description of Chi-square statistic

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Why do you use the chi-square statistic? What type of data is used with chi square analysis?

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Solution explains the use of chi square statistic. It also explains the conditions for using it. Answer is typed in MS Word and it contains about 375 words.

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Solution:
The chi- square statistic is a nonparametric statistical technique used to determine if a distribution of observed frequencies differs from the theoretical expected frequencies.

Chi-square statistics use nominal or ordinal level data. It uses frequencies not the means and variances. No rigid assumption is necessary about type of population we are considering.

Value of the chi-square statistic can be found by using formula given below.

where fo is the observed frequency and fe is ...

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• BEng (Hons) , Birla Institute of Technology and Science, India
• MSc (Hons) , Birla Institute of Technology and Science, India
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##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.