Properties Of Variances MCQ Tests
12th Class Statistics MCQ Tests
Properties Of Variances
of 12th Class Statistics has 5 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 5
Total Marks: 5
Time: 5 Mins
Total Questions: 5
Total Marks: 5
Time: 5 Mins
5Min : 00 Sec Remaining
Question # 1
Suppose that the cost of maintaining a car is given by a random variable, X, with mean 200 and variance 260. If a tax of 20% is introduced on all items associated with the maintenance of the car, what will the variance of the cost of maintaining a car be?
Question # 2
If P(X = 1) = 0.1, P(X = 2) = 0.2, P(X = 3) = 0.3, P(X = 4) = 0.4 and Y=9X + 14, what is the variance of Y?
Question # 3
Consider the gambling game in which the casino chooses to lower each payout by $1.00, then double each prize. If the new variance is 15.84 then what is the original variance ?
Question # 4
What is Var(X) when X is outcome of one fair die?
Question # 5
Total Questions
12345
Question # 1
Suppose that the cost of maintaining a car is given by a random variable, X, with mean 200 and variance 260. If a tax of 20% is introduced on all items associated with the maintenance of the car, what will the variance of the cost of maintaining a car be?
Question # 2
If P(X = 1) = 0.1, P(X = 2) = 0.2, P(X = 3) = 0.3, P(X = 4) = 0.4 and Y=9X + 14, what is the variance of Y?
Question # 3
Consider the gambling game in which the casino chooses to lower each payout by $1.00, then double each prize. If the new variance is 15.84 then what is the original variance ?
Question # 4
What is Var(X) when X is outcome of one fair die?
Question # 5
Total Questions
12345
Statistics
- Representation and Exploration of Data
- Measure of Central Tendency or Averages
- Measures of Dispersion
- Index Numbers
- Regression and Correlation Analysis
- Analysis of Time Series
- Set Theory
- Introduction to Probability
- Random Variables and Distributions
- Binomial and Hypergeometric Distributions
- The Normal Distribution
- Sampling and Sampling Distributions
- Statistical Inference:Estimation
- Statistical Inference:Hypothesis Testing
- Association of Attributes
12th Class Online Classes 2026
Updated on: 10-05-2026
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