Data consistency in the theory of attributes requires that: MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Statistics Questions
Question #1
Report Error
Which of the following is a method of collecting primary data?
Correct Answer: Option C
Explanation:
Schedules filled by enumerators is a primary data collection method; the others are secondary sources.
Schedules filled by enumerators is a primary data collection method; the others are secondary sources.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
Report Error
The National Sample Survey Office (NSSO) conducts surveys on:
Correct Answer: Option B
Explanation:
NSSO conducts socio-economic surveys, including consumer expenditure, employment-unemployment.
NSSO conducts socio-economic surveys, including consumer expenditure, employment-unemployment.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
Report Error
A medical test has 95% sensitivity and 90% specificity. If disease prevalence is 1%, the probability that a person with a positive test actually has the disease is approximately:
Correct Answer: Option D
Explanation:
Using Bayes: P(Disease|Positive) = [Sensitivity × Prevalence] / [Sensitivity×Prev + (1-Specificity)×(1-Prev)] = (0.95×0.01) / (0.95×0.01 + 0.10×0.99) = 0.0095 / (0.0095 + 0.099) = 0.0095/0.1085 ≈ 0.0876 ≈ 8.7%. Highlights low positive predictive value when prevalence is low.
Using Bayes: P(Disease|Positive) = [Sensitivity × Prevalence] / [Sensitivity×Prev + (1-Specificity)×(1-Prev)] = (0.95×0.01) / (0.95×0.01 + 0.10×0.99) = 0.0095 / (0.0095 + 0.099) = 0.0095/0.1085 ≈ 0.0876 ≈ 8.7%. Highlights low positive predictive value when prevalence is low.
This question belongs to:
Accountancy and Statistics
Statistics
No comments yet. Be the first to start the discussion!