QTM Objective Set 5

Q1. Quantitative Techniques facilitate classification and comparison of data

True

False

Answer

Ans: True

Q2. If the data is written down as collected it is called

(a). Ordered Data

(b). Raw Data

(c). An Array

Answer

Ans: (b). Raw Data

Q3. Any characteristic which can assume different values can be called a variable

True

False

Answer

Ans: True

Q4. A discrete variable can take

(a). Only whole number values

(b). An infinite number of values.

Answer

Ans: (a). Only whole number values

Q5. Number of children in a family is an example of

(a). Continuous Variable

(b). Discrete Variable

Answer

Ans: (b). Discrete Variable

Q6. Heights of Models in a beauty contest is an example of

(a). Continuous Variable

(b). Discrete Variable

Answer

Ans: (a). Continuous Variable

Q7. Rule determining the area is written as A = X

where A is a function of Variable X.

Then A is called

(a). Independent Variable

(b). Dependent Variable

Answer

Ans: (b). Dependent Variable

Q8. The Absolute Value of a real number is 

True

False

Answer

Ans: True

Q9. If the revenue function is TR = 50Q – 0.5Q² then Marginal Function MR = 50 – Q

True

False

Answer

Ans: True

10. If the Total Cost Function TC = 500 + 300Q – 5Q² Then Marginal Cost Function MC=500-10Q

True

False

Answer

Ans: False

Q11. Conditions for Local Maxima are

First order Function d²y/dx² > 0

True

False

Answer

Ans: False

Q12. Conditions for local Minima are

First order Function dy/dx = 0 Second Order Function d²y / dx² < 0

True

False

Answer

Ans: False

Q13. Derivative of product of two functions

d/dx(uv) = u d/dx (v) + v d/dx

True

False

Answer

Ans: False

Q14. Derivative of log_e

d/dx (log_e u) = 1/u log _e du/dx

True

False

Answer

Ans: True

Q15. A matrix is an array of m x n numbers arranged in m-columns and n-rows

True

False

Answer

Ans: False

Q16. A square matrix is one where number of rows = (number of colums)²

True

False

Answer

Ans: False

Q17. [4 1 2 7] is a

(a). 4 x 1 matrix

(b). 1 x 4 matrix

Answer

Ans: (b). 1 x 4 matrix

Q18. Then A is called the TRANSPOSE OF A

True

False

Answer

Ans: True

Q19. The INVERSE of the INVERSE MATRIX is the original matrix

True

False

Answer

Ans: True

Q20. Measure of Central Tendency is a data set refers to the extent to whim tt1e observations are scattered.

True

False

Answer

Ans: True

Q21. The value of all observations in the data set is taken into account when we calculate its mean

True

False

Answer

Ans: True

Q22. If the curve of a certain distribution tails off towards the right end of the measuring scale on tt1e horizontal axis the distribution is said to be positively skewed.

True

False

Answer

Ans: True

Q23. Extreme values in a data have a strong effect upon the Mode

True

False

Answer

Ans: False

Q24. If the value of mean = 35.4 and value of media = 35 the shape of the curve skewed is “right”

True

False

Answer

Ans: True

Q25. It gives equal weightage to all previous months

(a). Exponential Smoothing

(b). Moving Average

(c). Weighted Average

Answer

Ans: (b). Moving Average

Q26. The value most often repeated in a series of observations is called

(a). Median

(b). Mode

(c). Mean

Answer

Ans: (b). Mode

Q27. The difference between the largest and the smallest observations is called

(a). Geometric Mean

(b). the Range

(c). the Mode

Answer

Ans: (b). the Range

Q28. The middle most value in a series of observations arranged in an array is called.

(a). Mode of the series

(b). Median of the series

Answer

Ans: (b). Median of the series

Q29. When the value of two variables move in the same direction, the correlation is said to be positive.

True

False

Answer

Ans: True

Q30. Value of correlation lies between

(a). 0 to 1

(b). -1 to 1

Answer

Ans: (b). -1 to 1

Q31. Kari Pearson’s coefficient of correlation is given by 

Answer

Ans: Francis Galton

Q32. “Line of best fit” is determined by “Method of Least Squares”

True

False

Answer

Ans: True

Q33. A decision tree is a graphic model of a decision process

True

False

Answer

Ans: True

Q34. A time series is a set of observations taken at

(a). Specified Intervals

(b). Not necessary at equal intervals

Answer

Ans: (a). Specified Intervals

Q35. Quartiles are those which divide the total data into

(a). Four Equal parts

(b). Ten Equal Parts

(c). Hundred equal Parts

Answer

Ans: (a). Four Equal parts

Q36. Regular variation include only seasonal variations

True

False

Answer

Ans: False

Q37. Yearly data are independent of the effect s of seasonal variations

True

False

Answer

Ans: False

Q38. For index Numbers, base year should be a year of normalcy

True

False

Answer

Ans: True

Q39. GM = SQ ROOT OF (AM* HM)

True

False

Answer

Ans: False

Q40. Variances are additive

True

False

Answer

Ans: False