PSYC 3002 Introduction to Basic Statistics Comprehensive Exam Review Qns & Ans 2026

PSYC 3002 Introduction to Basic Statistics Comprehensive Exam Review (Qns & Ans) 2026
1. Which of the following is a measure of central tendency?
 - A. Standard deviation
 - B. Variance
 - C. Mean
 - D. Range
 - ANS: C. Mean
 - Rationale: The mean is a measure of central tendency, while
standard deviation and variance are measures of dispersion, and
range is a measure of variability.
2. In a normal distribution, what percentage of data falls within
one standard deviation of the mean?
 - A. 50%
 - B. 68%
 - C. 95%
 - D. 99.7%
 - ANS: B. 68%
 - Rationale: In a normal distribution, approximately 68% of
the data falls within one standard deviation of the mean.
3. Which statistical test is used to compare the means of two
independent groups?
 - A. Chi-square test
 - B. Paired t-test
 - C. Independent t-test
 - D. ANOVA
 - ANS: C. Independent t-test
 - Rationale: The independent t-test is used to compare the
means of two independent groups.