SOC201 Quiz 2

Q1. With α = 0.05, how much of the distribution represents the critical region?

1. 10%
2. 5%
3. 1%
4. 50%

Correct answer: 5%

Q2. Which of the formula is used to measure the mean of Binomial Distribution?

1. p+n
2. np
3. np (1-p)
4. n-p

Correct answer: np

Q3. If we add a constant to each score in statistics then it will not change the __________

1. Sample
2. Standard deviation
3. None of the given options
4. Variable

Correct answer: Standard deviation

Q4. Sample means should be relatively close to the:

1. Population means
2. Population size
3. Critical region
4. Sample size

Correct answer: Population means

Q5. When a variable is measured on a scale consisting of exactly two categories: the resulting data are called:

1. Distribution
2. Population
3. Binomial
4. Normal

Correct answer: Binomial

Q6. Why is the sample variance considered biased if divided by n?

1. It eliminates variability
2. It underestimates the population variance
3. It ignores the mean
4. It overestimates standard deviation

Correct answer: It underestimates the population variance

Q7. Which of the following two main areas are discussed in Inferential Statistics?

1. Level of the significant degree of freedom
2. Point estimate and interval estimate
3. Estimation of parameter testing of hypothesis
4. Biased estimator and unbiased estimator

Correct answer: Estimation of parameter testing of hypothesis

Q8. In statistical models, ANOVA stands for:

1. Analysis of variable
2. Analysis of verification
3. Analysis of Variance
4. Analysis of variation

Correct answer: Analysis of Variance

Q9. Which of the following measure of dispersion provides the difference between the third and first quartile?

1. Inter Quartile Range
2. Range
3. Standard Deviation
4. Variance

Correct answer: Inter Quartile Range

Q10. What does the null hypothesis (H0) state in hypothesis testing?

1. The treatment has an effect
2. The treatment has no effect
3. The data support the research hypothesis
4. The sample mean is extreme

Correct answer: The treatment has no effect