Business Statistics And Research Methods - Study Mode

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[#321] Probability of rejecting the null hypothesis when it is true, is called

(A) type II error

(B) type I error

(C) standard error

(D) None of these

Correct Answer

(B) type I error

[#322] Among the following, choose the most suitable 'test' that can be applied to examine the influence of one factor on different groups

(A) 't' test

(B) 'F' test

(C) 'Chi-square' test

(D) None of the above

Correct Answer

(B) 'F' test

[#323] With reference to dispersion, which of the following statement is/are correct? (1) Relative measures of dispersion are independent of units of measurement of data (2) Standard deviation can be negative Choose the correct answer from the options given below

(A) Only 1

(B) Only 2

(C) Both 1 and 2

(D) Neither 1 nor 2

Correct Answer

(A) Only 1

[#324] Consider the following tests. 1. Z-test 2. T-test 3. F-test 4. Chi-square test The concept of degree of freedom is associated with

(A) Both 1 and 2

(B) Both 2 and 3

(C) Both 3 and 4

(D) 2, 3 and 4

Correct Answer

(D) 2, 3 and 4

[#325] Which of the following statement is/are correct? (1) Statistics deals with aggregate of facts. (2) All facts numerically expressed are Statistics. Select the correct answer using the options given below

(A) Only 1

(B) Only 2

(C) Both 1 and 2

(D) Neither 1 nor 2

Correct Answer

(A) Only 1