Forum Moderator. A t-test is a hypothesis test for the difference in means of a single variable. A correlation test is a hypothesis test for a relationship between two variables.

- Q. Which of the following is most likely to be the inverse relationship?
- Q. What does a weak negative correlation mean?
- Q. Is at test a correlation?
- Q. What is the difference between paired t-test and correlation?
- Q. What is the difference between chi-square test and t-test?
- Q. How do you test for correlation?

## Q. Which of the following is most likely to be the inverse relationship?

Which of the following pairs is the most likely to exhibit an inverse relationship? Correct answer is ‘D’. For an inverse relation, a change in one variable induces an opposite change in the other variable.

## Q. What does a weak negative correlation mean?

A negative correlation is a relationship between two variables that move in opposite directions. In other words, when variable A increases, variable B decreases. A negative correlation is also known as an inverse correlation. As another example, these variables could also have a weak negative correlation.

## Q. Is at test a correlation?

Correlation is a statistic that describes the association between two variables. The correlation statistic can be used for continuous variables or binary variables or a combination of continuous and binary variables. In contrast, t-tests examine whether there are significant differences between two group means.

## Q. What is the difference between paired t-test and correlation?

Paired Samples Statistics gives univariate descriptive statistics (mean, sample size, standard deviation, and standard error) for each variable entered. Paired Samples Correlations shows the bivariate Pearson correlation coefficient (with a two-tailed test of significance) for each pair of variables entered.

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

A t-test tests a null hypothesis about two means; most often, it tests the hypothesis that two means are equal, or that the difference between them is zero. A chi-square test tests a null hypothesis about the relationship between two variables.

## Q. How do you test for correlation?

Methods for correlation analyses

- Pearson correlation (r), which measures a linear dependence between two variables (x and y). It’s also known as a parametric correlation test because it depends to the distribution of the data.
- Kendall tau and Spearman rho, which are rank-based correlation coefficients (non-parametric)

Statistics doesn't need to be difficult. Using the t-test, ANOVA or Chi Squared test as part of your statistical analysis is straight forward. You do need to…

## No Comments