A. SD(X)−SD(Y)
B. SD(X)+SD(Y)
C. SD(X)+SD(Y)−−−−−−−−−−−−−−√
D. Var(X)+Var(Y)−−−−−−−−−−−−−−−√
18) If Y=−8X − 5 and SD of X is 3, then SD of Y is
Correct Answer: SD(X)+SD(Y) ✔
Last Updated: October 05, 2021
Related MCQs
- Which hypothesis tell us weather test is one tail or 2 tail?
- The data obtained very first are called:__________?
- If any statistical tool apply on primary data it becomes a__________?
- Single numerical fact is called________?
- The collection of numerical facts is called_________?
- When there is 0 in our dataset which mean we cannot calculate?
- Founder of statistics is_________?
- Another name of word population is_________?
- Which sampling technique is appropriate when there is homogeneity in population?
- Which sampling method we will apply if there is no sampling frame?
- When the word random variable use in statistics it must have?
- Which mean is most effected by extreme values?
- If x is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the x will be__________?
- A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted x of wages paid per day will be__________?
- In a week the prices of a bag of rice were 350 ,280, 340, 290, 320, 310, 300. The range is__________?
- If a distribution has two modes then this distribution is called__________?
- The Harmonic Mean of any two numbers is__________?
- Which of the following Measure of averages is affected by extreme (very small or very largE. values in data set?
- Geometric means of X1 and X2 is__________?
- Which of the following Measure of Averages is not based on all the values given in the data set?
- If 10% is added to each value of variable, the geometric mean of new variable is added by__________?
- The Geometric Mean of -2, 4, 03, 6, 0 will be__________?
- Which of the following cannot be less than zero (negative)?
- If any of the value in data set is zero then it is not possible (i.e. impossiblE. to compute__________?
- Data must be arranged either in ascending or descending order, if some wants to compute__________?
- 2nd Quartile = 5th Decile = 50th Percentile = ?
- __________is the measure of average which can have more than one value?
- In a frequency distribution the last cumulative frequency is 500. Q3 must lie in__________?
- The average monthly production of a factory for the first 8 months is 2,500 units, and for the next 4 months the production was 1,200 units. The average monthly production of the year will be__________?
- Find the median of the following datA. 160, 180, 200, 280, 300, 320, 400?
- In a frequency distribution the last cumulative frequency is 300, Median shall lie in__________?
- Given the N values in a series, the geometric mean is__________?
- The sum of squared deviation is least from__________?
- The average of first n natural numbers is__________?
- The mean of a constant “b” is__________?
- Sum of deviations will be zero if it is taken from__________?
- The mean of 10 numbers is 9, then sum of these numbers will be__________?
- For a certain distribution if ∑(x−2)=18,∑(x−24)=0,∑(x−28)=−24) then arithmetic mean is__________?
- Arithmetic mean of two positive numbers “X” and “Y” is__________?
- The calculation of mean and variance is based on__________?
- If β2=m4m22<3, the distribution is called__________?
- The degree of peakedness is called__________?
- Quartile Coefficient of skewness lies between__________?
- If the third moment about mean is zero then distribution is__________?
- __________ is used to criterion of consistency i.e for consistence performance?
- For a symmetrical distribution approximately 68% of the cases are included between __________?
- If Y=−8X − 5 and SD of X is 3, then SD of Y is __________?
- The variance of a constant is__________?
- Var(2X+3) is__________?
- Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be__________?
- The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is__________?