Team A
This plot is used to find the relationship between two independent variables
What is a scatter plot?
This denotes the Pearson's correlation coefficient
What is r?
This denotes Spearsman's correlation coefficient
What is rs?
This denotes the two variables are negatively correlated
What a negative r value denotes?
When the P value is < 0.05
When we will reject the null hypothesis?
It is a statement made about a population for testing purpose
What is a hypotheses?
This is the threshold used to decide whether to reject the null hypothesis.
What is the significance level (alpha, α)?
When P value > 0.05
When we do not reject the null hypothesis?
This test compares observed frequencies with expected frequencies to check if differences are due to chance.
What is the Chi-square test?
This test is used when the data is not normally distributed and we have paired samples and data contain extreme values
When we will use Wilcoxon signed rank test?
This test is used when the data is not normally distributed and we have independent samples
When we will use Wilcoxon rank sum test?
This test is used when we have to compare more than two independent samples at the same time
When we can use ANOVA?
This is when neither researcher nor participants know the treatment groups
What is a double-blind study?
“In trials comparing treatments with different forms, this technique gives all participants both a placebo and an active treatment to maintain blinding.”
What is the double dummy technique?
When a person's physical or mental health appears to improve after taking a 'dummy' treatment.
What is a placebo effect?
This type of error consistently skews results in the same direction due to flaws in measurement or experimental design.
What is a systematic error?
It is also called a rejection error
What is the other name of a type I error
The probability of this error is commonly denoted by β.
What is a Type II error?
The probability of committing this error is equal to the significance level α.
What is a Type I error?
This error happens when a false null hypothesis is not rejected.
What is a Type II error?