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Questions › JNU › JNU SSS 2012 › Q36
1 mark, −0.25Statistics › Descriptive statistics and dispersion › Measures of dispersionHardabout 3 min

JNU SSS 2012 Question 36: Descriptive statistics and dispersion

The names of 7 students when ranked in ascending order of their weights are AAA, BBB, CCC, DDD, EEE, FFF and GGG. AAA's weight is 45 kg and GGG's weight is 75 kg.

Suppose the name of FFF is deleted from the list and the difference in weights between any two consecutively ranked students on the list is a constant positive number. The ratio between the standard deviation of the weights of the six students and the mean absolute deviation of their weights is

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The names of 7 students when ranked in ascending order of their weights are A, B, C, D, E, F and G. A 's weight is 45 kg and G 's weight is 75 kg. Suppose the name of F is deleted from the list and the difference in weights between any two consecutively ranked students on the list is a constant positive number. The ratio between the standard deviation of the weights of the six students and the mean absolute deviation of their weights is (A) equal to unity (B) less than unity (C) greater than unity (D) indeterminate

Descriptive statistics and dispersion has come up 117 times in 6 exams since 2004.

What this question tests

This question is on Measures of dispersion, part of Descriptive statistics and dispersion in Statistics.

How spread out data are: range, variance, standard deviation and relative measures.

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