Q3 RESEARCH 9 REVIEW QUIZ

A group of subjects selected from a population is a __.

 

• Data

• Group

• Portion

• Sample

A __ consists of all subjects (human or otherwise) that are being studied.

• Exam

• Population

• Sample

• Study

What are the two branches of Statistics?

 

• Engineering and Chemistry

• Inferential and Descriptive

• Mathematical and Inferential

• Hard and Easy

It is a type of inferential statistic used to determine if there is a significant difference between the means of two groups, which may be related in certain features.

• ANOVA  

• Chi-Square  

• Standard Deviation

• t-Test

It is a branch of statistics consists of generalizing from samples to populations, performing estimations and hypothesis tests, determining relationships among variables, and making predictions.

• Descriptive

• Inferential

• Mathematical

• Population

Which of the following is a nature of the data for t-test?

• There can be only one variable of interest 

• Numerical Variable 

• Normal Distribution

• All of the above

What is the purpose of a t-test?

  

• To determine if there is a statistically significant difference between the means of two groups or conditions

• To analyze categorical data

• To perform regression analysis

• To calculate the median of a dataset

Which type of t-test is used to compare a sample mean to a predefined/critical value?

• ANOVA   

• Independent sample t-test  

• One-sample t-test

• Paired t-test

What is this H₀ symbol called?

• Alternative Hypothesis   

• Associative Hypothesis 

• Null Hypothesis

• Simple Hypothesis

What is the assumption for the data in a one-sample t-test?

• Data should be approximately normally distributed  

• Data should be randomly selected  

• There should be significant outliers

• Data should be categorical