Introduction to Statistics

Question 1

What do you not write?

Answer 1

“The results / data are significant”

Question 2

What do you write?

Answer 2

The calculated test statistic is greater than the critical value at P=0.05

We can reject the null hypothesis and accept the alternative hypothesis

that there’s a significant ->
difference between the observed and expected results = Chi-squared

correlation between both variables = correlation coefficient

difference between the means - Student’s t-Test

Question 3

What do you need to know?

Answer 3

when and why to use each statistic test (i.e. chi-squared, correlation, etc)

Question 4

What is the Chi-squared test?

Answer 4

compares the differences between the observed and expected results

Question 5

What is the Correlation coefficient?

Answer 5

tests the strength of correlation between two variables

Question 6

What is the Student’s t-test?

Answer 6

compares the difference between the means of two sets of data