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Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)?
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Can anyone plz tell me the ans of this question with solution.if the S...
Var( x+y) = varX + varY Var(kx) = k^2 varX SD is 3 so variance is 9 Var(5-2x)= 4 varX = 4 *9 =36
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Can anyone plz tell me the ans of this question with solution.if the S...
Calculation of Variance of (5-2x) given SD of x is 3:
1. Formula for Variance:
Variance is the square of the standard deviation. It is calculated as the average of the squared differences from the mean.
2. Given Data:
- Standard Deviation of x = 3
3. Calculating Variance of (5-2x):
- Variance of (5-2x) = Variance of (-2x) as 5 is a constant
- Since variance is a measure of spread, multiplying a variable by a constant multiplies the variance by the square of that constant
- So, Variance of (-2x) = (-2)^2 * Variance of x
- Variance of x = SD of x^2 = 3^2 = 9
- Variance of (-2x) = (-2)^2 * 9 = 4 * 9 = 36
4. Result:
- The variance of (5-2x) is 36.
1. Formula for Variance:
Variance is the square of the standard deviation. It is calculated as the average of the squared differences from the mean.
2. Given Data:
- Standard Deviation of x = 3
3. Calculating Variance of (5-2x):
- Variance of (5-2x) = Variance of (-2x) as 5 is a constant
- Since variance is a measure of spread, multiplying a variable by a constant multiplies the variance by the square of that constant
- So, Variance of (-2x) = (-2)^2 * Variance of x
- Variance of x = SD of x^2 = 3^2 = 9
- Variance of (-2x) = (-2)^2 * 9 = 4 * 9 = 36
4. Result:
- The variance of (5-2x) is 36.
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Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)?
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Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)? for CA Foundation 2025 is part of CA Foundation preparation. The Question and answers have been prepared according to the CA Foundation exam syllabus. Information about Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)? covers all topics & solutions for CA Foundation 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)?.
Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)? for CA Foundation 2025 is part of CA Foundation preparation. The Question and answers have been prepared according to the CA Foundation exam syllabus. Information about Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)? covers all topics & solutions for CA Foundation 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can anyone plz tell me the ans of this question with solution.if the SD of x is 3, what is the variance of (5-2x)?.
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