PRC-2 · Chapter 8 · Question 30 of 60
If you subtract 3 from each observation of variable X and add 5 to each observation of variable Y, what will happen to a correlation coefficient of 0.85?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) It will remain exactly unchanged at 0.85.
Explanation
Adding or subtracting any constants to the independent or dependent variables represents a change of origin, which does not affect the mathematical strength or direction of the correlation.
More Statistical Measures of Data MCQs
- Q32A company has two departments. Department A has 20 employees with an average salary of Rs. 50,000. Department B has 30 employees with an…
- Q33Which specific graphical representation tool can be utilized by statisticians to accurately estimate the median of a grouped frequency…
- Q34Which graphical charting tool is typically utilized to visibly locate the 'mode' of a grouped continuous frequency distribution?
- Q35In a moderately skewed statistical distribution, which empirical relationship accurately links the mean, median, and mode?
- Q36If a constant value of 8 is mathematically added to every single observation in a dataset, what will be the resulting effect on the…