Business Statistics And Research Methods - Study Mode

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[#591] The weight of 50 students in pounds are given below 82 95 120 174 179 176 159 91 85 175 88 160 97 133 159 176 151 115 105 172 170 128 112 101 123 117 93 117 99 90 113 119 129 134 178 105 147 107 155 157 98 117 95 135 175 97 160 168 144 175 If the data are arranged in the form of frequency distribution with class interval as 81-100, 101-120, 121-140, 141-160, 161-180, then the frequencies for these five classes will be Select the correct answer using the options given below

(A) 6, 9, 10, 11, 14

(B) 12, 11, 6, 9, 11

(C) 6, 9, 12, 12, 11

(D) None of these

Correct Answer

(C) 6, 9, 12, 12, 11

[#592] Which of the following mean is most affected by extreme values?

(A) Mode

(B) Arithmetic mean

(C) Median

(D) Geometric mean

Correct Answer

(B) Arithmetic mean

[#593] If co-efficient of correlation is +0.9, then it shows

(A) Perfect correlation

(B) Absence of correlation

(C) Limited amount of correlation

(D) High amount of correlation

Correct Answer

(D) High amount of correlation

[#594] If a boy cycles 8 km at the speed of 8 km per hour, and walks another 8 km at the speed of 2 km per hour. His average speed per hour is

(A) 5 km

(B) $$frac{{16}}{5}$$ km

(C) 4 km

(D) 6 km

Correct Answer

(C) 4 km

[#595] Which of the following statement is the correct?

(A) $$overline X < GM < HM$$

(B) $$overline X > GM > HM$$

(C) $$overline X > GM < HM$$

(D) $$GM > overline X < HM$$

Correct Answer

(B) $$overline X > GM > HM$$