Research Methods And Statistics Quiz

1. What is the purpose of a control group in an experiment?

• To provide a baseline for comparison

• To ensure that the experiment is conducted ethically

• To manipulate the independent variable

• To collect qualitative data

1. What does random assignment refer to in an experiment?

• Assigning participants to experimental or control groups based on their preferences

• Assigning participants to groups based on characteristics such as age or gender

• Assigning participants to groups by chance

• Assigning participants to groups based on the researcher's discretion

1. Which measure of central tendency is most affected by extreme scores?

• Mean

• Median

• Mode

• Range

1. In a normal distribution, what percentage of scores fall within one standard deviation from the mean?

• 34%

• 50%

• 68%

• 95%

1. Which of the following correlation coefficients indicates the strongest relationship between two variables?

• +0.25

• -0.75

• +0.90

• -0.05

1. What is the purpose of inferential statistics?

• To describe and summarize data

• To make predictions based on data

• To determine cause-and-effect relationships

• To determine cause-and-effect relationships

1. What does statistical significance indicate about the results of a study?

• The results are practically meaningful

• The results are unlikely to be due to chance

• The results have been replicated across multiple studies

• The results supports the researcher's hypothesis

1. Which measure of variability is least affected by extreme scores?

• Range

• Standard Deviation

• Variance

• Interquartile Range

1. What is the purpose of informed consent in psychological research?

• To ensure that participants are fully informed about the study

• To obtain permission from participants before beginning the study

• To protect participants from harm or discomfort

• To ensure that participants are compensated for their time

1. Which type of research design involves observing and recording behavior in its natural environment without manipulating or controlling it?

• Experimental

• Correlational

• Observational

• Survey