Describe a goodness-of-fit test. What assumptions are made when using a goodness-of-fit test?

Dillard

Dillard

Answered question

2021-01-30

Describe a goodness-of-fit test. What assumptions are made when using a goodness-of-fit test?

Answer & Explanation

Isma Jimenez

Isma Jimenez

Skilled2021-01-31Added 84 answers

Step 1
The chi-square is a non-parametric test which is used for comparing the categorical variables. The chi-square goodness of fit test helps in determining how the observed distribution fits the expected distribution. It is used for comparing the observed data with the expected data. In other words, it determines whether the data of the sample is reliable with the population distribution or not.
Step 2
Assumptions:
-The sample drawn must be randomly selected.
-The variable considered for the study must be a categorical variable.
-Different levels of categorical variable must be mutually exclusive.
-Each of the observations from the sample must be independent of each other.
-Each level of the categorical variable must have at least 5 expected frequencies.

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