Which of the following cannot be a variable?

Statement I The product of coefficient of correlation, standard deviation of variable 'X' and Standard deviation of variable 'Y' gives the measure of covariance between X and Y variables.
Statement II The product of coefficient of correlation between X and Y variables and the ratio between standard deviation of X variable to standard deviation of Y variable measures the slope of the regression line of X on Y variable.

A

Both statements are correct

B

Both statements are incorrect

C

Statement I is correct while Statement II is incorrect

D

Statement I is incorrect while Statement II is correct

To produce a component, any of the four processes can be adopted. Process A: Fixed cost = Rs. 20, Variable cost/piece = Rs. 4 Process B: Fixed cost = Rs. 50, Variable cost/piece = Rs. 3 Process C: Fixed cost = Rs. 60, Variable cost/piece = Rs. 2 Process D: Fixed cost = Rs. 70, Variable cost/piece = Rs. 1 Which of the following process is the most economical to produce 100 pieces in a batch?

A

Process C

B

Process D

C

Process B

D

Process A

Read the following statements and mark your answer according to the given below.
1. For variable input APP = MPP in the first stage.
2. For variable input APP = MPP at the end of the 1^st stage.
3. For variable input APP = MPP at the start of 2^nd stage.
4. For variable input APP = MPP in the 2^nd stage.

A

1 and 3

B

1 and 4

C

2 and 3

D

2 and 4

In method of serial learning for an experiment relating to the effect of meaningfulness on the rate of learning, the rate of learning can be conceptualised as
1. dependent variable
2. independent variable
3. organimic variable
4. stimulus variable
Select the correct answer:

A

Only 1

B

Only 2

C

3 and 4

D

1 and 2

Which of the following features best describe an independent variable in research ? A. It is the cause in the cause-effect relationship. B. It is the effect in the cause-effect relationship. C. It is the condition or characteristic which is manipulated in an experimental study. D. It is the variable which is placed under control. E. It is a kind of response variable. Choose the correct answer from the options given below:

A

A and B only

B

B and C only

C

A and C only

D

D and E only

Assume that a program creates and initializes a Short Integer variable named age and a pointer named agePtr, to which it assigns the address of the age variable. Which of the following statements will assign the number 21 to the age variable?

A

age = 21;

B

*age = 21;

C

agePtr = 21;

D

*agePtr = 21;

E

both (a) and (d)

A structure variable named address contains a member variable named strStreet. Which of the following statements assigns the string “Maple” to the member variable?

A

address&strStreet = “Maple”

B

address.strStreet = “Maple”

C

strStreet.address = “Maple”

D

strStreet&address=”Maple”

A structure variable named address contains a member variable named strStreet. Which of the following statements assigns the string "Maple" to the member variable?

A

address&strStreet = "Maple"

B

address.strStreet = "Maple"

C

strStreet.address = "Maple"

D

strStreet&address="Maple"

Which of the following is correct?
(i) National income = gross national product - Depreciation
(ii) National income = Rent + Wages + Salary + interest + profit
(iii) Variable cost Average variable cost = $$\frac{{{\text{Variable cost}}}}{{{\text{Production}}}}$$
Select your answer

A

(i), (ii)

B

(i), (iii)

C

(ii), (iii)

D

(i), (ii), (iii)

A team of six members is to be selected from five men M1, M2, M3 M4, and M5, and five women W1, W2, W3, W4, and W5. W2 and W5 cannot be selected together. M1 and W3 have to be selected together. W3 and W4 cannot be selected with M2. W1 and M5 cannot be selected together. M3 and M4 cannot be selected together. Which of the following members may be selected?

A

M4, M5, W1, W3, W4

B

M1, M2, W1, W3, W5

C

M4, M5, W2, W4, W5

D

M1, M3, W1, W3, W4

Which of the following cannot be a variable?

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