Business Statistics And Research Methods - Study Mode

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[#116] Which of the following should be taken as the main features of an ideal average? 1. Easy to Understand and Simple to Compute 2. Rigidly Defined 3. Based on the minimum number of items in the data 4. Not to be Unduly Affected by Extreme Items 5. Capable of Further Algebraic Treatment 6. Less Sampling Stability

(A) 2, 4 and 5

(B) 1, 3, 4 and 5

(C) 1, 2, 4 and 5

(D) 2, 3, 4 and 5

Correct Answer

(C) 1, 2, 4 and 5

[#117] $${gamma _2}$$ coefficientis equal to

(A) $${x08eta _1} - 3$$

(B) $${x08eta _2} - 6$$

(C) $${x08eta _2} - 3$$

(D) None of these

Correct Answer

(C) $${x08eta _2} - 3$$

[#118] Which of the following statements is/are true about a population in statistics? 1. Population is the total number of items under observation. 2. Parameter is a characteristics of population. 3. Each unit in a population possess same characteristics.

(A) Both 1 and 2

(B) Both 2 and 3

(C) Both 1 and 3

(D) 1, 2 and 3

Correct Answer

(A) Both 1 and 2

[#119] What part of the standard deviation is the mean deviation?

(A) $$frac{3}{5}$$

(B) $$frac{5}{4}$$

(C) $$frac{4}{5}$$

(D) $$frac{2}{4}$$

Correct Answer

(C) $$frac{4}{5}$$

[#120] For a symmetrical distribution:

(A) β1 > 0

(B) β1 < 0

(C) β1 = 0

(D) β1 = 3

Correct Answer

(C) β1 = 0