Quiz on Quantitative Analysis

What is the primary focus of Descriptive Statistics?

• Analyzing sample data

• Making predictions about a population

• Collecting and presenting data

• Testing hypotheses

Which of the following is an example of Inferential Statistics?

• Counting the number of students in a school

• Calculating the average score of a class

• Determining the relationship between age and buying preference

• Surveying a sample to predict election outcomes

What does a Type I Error represent?

• Accepting a false alternative hypothesis

• Rejecting a true null hypothesis

• Failing to reject a false null hypothesis

• Failing to accept a true alternative hypothesis

Which measure of central tendency is the middle value in a data set?

• Mean

• Median

• Mode

• Range

What type of sampling involves selecting every nth member from a population?

• Simple random sampling

• Systematic sampling

• Cluster sampling

• Stratified sampling

In hypothesis testing, what does the null hypothesis (Ho) typically represent?

• A claim that is always accepted

• A prediction about the outcome of a study

• A statement that must be proven true

• A statement of no effect or no difference

Which of the following is a characteristic of Non-probability sampling?

• Every member has an equal chance of being selected

• It requires a large sample size

• Selection is based on specific criteria

• It is always random

What is the purpose of Regression Analysis?

• To summarize data

• To predict the value of a dependent variable

• To test hypotheses

• To analyze variance

Which statistical test is used to compare means between two independent groups?

• t-test for independent samples

• ANOVA

• t-test for dependent samples

• z-test

What does a p-value less than 0.05 indicate in hypothesis testing?

• The null hypothesis should be accepted

• The null hypothesis should be rejected

• The results are inconclusive

• There is no significant difference