18 Questions
What is the term used to describe the quantity n – 1 in statistical analysis?
Degrees of freedom
What is the primary purpose of determining the critical value in a statistical test?
To define the region of rejection from the region of acceptance of the null hypothesis
What is the purpose of calculating the standard deviation of a dataset?
To understand the variability of the data
Which statistical tool is used to analyze the difference between two groups?
t-test for independent samples
Which type of data analysis involves the examination of multiple relations between multiple variables?
Multivariate Analysis
What is the main purpose of inferential statistics?
To make inferences about a population from a sample
What is the decision if the calculated value is greater than the critical value in a statistical test?
Reject the null hypothesis
What is the first step in performing a statistical test?
Choose the statistical test and perform the calculation
Which statistical tool is used to analyze the relationship between two continuous variables?
Pearson's r
What is the term used to describe the analysis of a single variable?
Univariate analysis
What type of analysis involves the examination of a single variable?
Univariate Analysis
What is the purpose of determining the type of variable in a statistical test?
To choose the appropriate statistical test
What is the main goal of inferential statistics?
To make generalizations about a population from samples
Which test is used to compare the means of two independent groups?
t-test for independent samples
What is the minimum sample size required for using the z-test?
30
When would you use ANOVA?
When comparing the means of two or more groups
What is the purpose of the t-test for dependent samples?
To compare the means before and after treatment
What type of statistical measure is used to test if the difference between two means is significant?
Test of significance of difference
Identify the steps involved in hypothesis testing, including choosing the statistical test, computing the calculated value, and determining the critical value. Learn how to reject or accept the null hypothesis in this quiz.
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