# Can you use chi-square and t-test?

## Can you use chi-square and t-test?

a t-test is to simply look at the types of variables you are working with. If you have two variables that are both categorical, i.e. they can be placed in categories like male, female and republican, democrat, independent, then you should use a chi-square test.

What is the difference between t-test ANOVA and chi-square?

Chi-square test is used on contingency tables and more appropriate when the variable you want to test across different groups is categorical. It compares observed with expected counts. Both t test and ANOVA are used to compare continuous variables across groups.

### What is the difference between t-test and chi test?

The t-test allows you to say either “we can reject the null hypothesis of equal means at the 0.05 level” or “we have insufficient evidence to reject the null of equal means at the 0.05 level.” A chi-square test allows you to say either “we can reject the null hypothesis of no relationship at the 0.05 level” or “we have …

Why is chi-square used?

A chi-square test is a statistical test used to compare observed results with expected results. The purpose of this test is to determine if a difference between observed data and expected data is due to chance, or if it is due to a relationship between the variables you are studying.

#### For what types of data would you use a chi square test?

The Chi Square statistic is commonly used for testing relationships between categorical variables. The null hypothesis of the Chi-Square test is that no relationship exists on the categorical variables in the population; they are independent.

What is the difference between t-test and Z test?

T-test refers to a type of parametric test that is applied to identify, how the means of two sets of data differ from one another when variance is not given. Z-test implies a hypothesis test which ascertains if the means of two datasets are different from each other when variance is given.

## What does the chi-square test tell you?

Learning Objectives

• Key Terms
• Overview. The primary use of the chi-square test is to examine whether two variables are independent or not.
• Carrying out the Chi-Square Test in SPSS. To perform a chi square test with SPSS,click “Analyze,” then “Descriptive Statistics,” and then “Crosstabs.”
• Exercises.
• What does chi square test tell you?

The chi-square test is a hypothesis test designed to test for a statistically significant relationship between nominal and ordinal variables organized in a bivariate table. In other words, it tells us whether two variables are independent of one another.

### What are the types of chi square tests?

contracted pneumoccal pneumonia;

• contracted another type of pneumonia; and
• did not contract pneumonia.
• What is an example of a chi square test?

212 of the candies are blue.

• 147 of the candies are orange.
• 103 of the candies are green.
• 50 of the candies are red.
• 46 of the candies are yellow.
• 42 of the candies are brown.