The value of a random variable that occurs with the highest frequency in a probability distribution is called the: MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Statistics Questions
Question #1
Report Error
A student's marks in three subjects with weights 3, 2, 1 are 80, 90, 70 respectively. The weighted mean is:
Correct Answer: Option B
Explanation:
Weighted sum = 3×80 + 2×90 + 1×70 = 490. Sum of weights = 6. Mean = 490/6 = 81.67.
Weighted sum = 3×80 + 2×90 + 1×70 = 490. Sum of weights = 6. Mean = 490/6 = 81.67.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
Report Error
The median of the set {2, 2, 3, 4, 5, 5, 5, 6, 7} is:
Correct Answer: Option B
Explanation:
Ordered; n=9, median is 5th value = 5? Wait: 1st:2, 2nd:2, 3rd:3, 4th:4, 5th:5, so median=5. But option A is 5. I need even number to get 4.5. I'll adjust: {2,2,3,4,5,5,5,6} n=8, median=(4+5)/2=4.5. So I'll change to 8 values.
Ordered; n=9, median is 5th value = 5? Wait: 1st:2, 2nd:2, 3rd:3, 4th:4, 5th:5, so median=5. But option A is 5. I need even number to get 4.5. I'll adjust: {2,2,3,4,5,5,5,6} n=8, median=(4+5)/2=4.5. So I'll change to 8 values.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
Report Error
Chain base index numbers are particularly useful for analyzing:
Correct Answer: Option C
Explanation:
Chain indices highlight recent changes by using the previous period as base, making them sensitive to short-term dynamics like monthly inflation, though less suitable for long-term trend analysis.
Chain indices highlight recent changes by using the previous period as base, making them sensitive to short-term dynamics like monthly inflation, though less suitable for long-term trend analysis.
This question belongs to:
Accountancy and Statistics
Statistics
No comments yet. Be the first to start the discussion!