[{"id":234865,"question":"Mean deviationis always.","choices":[{"text":"More than S.D.","value":"A"},{"text":"Equal to S.D.","value":"B"},{"text":"Less than S.D.","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":234864,"question":"The sum of squares of deviations is a minimum if these deviations are taken from the.","choices":[{"text":"Mean","value":"A"},{"text":"Mode","value":"B"},{"text":"Median","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":234863,"question":"Moment ratios b1 and are.","choices":[{"text":"Expressed in original unit of the data","value":"A"},{"text":"Dimensionless quantities","value":"B"},{"text":"Independent of origin and scale of messurement","value":"C"},{"text":"Both b and c","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":234862,"question":"The distribution is positively skewed if.","choices":[{"text":"Mean &lt; Mode","value":"A"},{"text":"Mean &gt; Mode","value":"B"},{"text":"Mean &gt; Median","value":"C"},{"text":"Both b and c","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":234861,"question":"The distribution is measokurtic if the moment coefficient of of kurtosis b2 is.","choices":[{"text":"Equal to 0","value":"A"},{"text":"Equal to 3","value":"B"},{"text":"Less than 3","value":"C"},{"text":"Greater than zero","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":234860,"question":"The distribution is symmetrical if the moment coefficient of skewense b1 is.","choices":[{"text":"Negative","value":"A"},{"text":"Postive","value":"B"},{"text":"3","value":"C"},{"text":"0","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":234859,"question":"The compare the variation of two or more than two sereies, we use.","choices":[{"text":"Mean absolute deviation","value":"A"},{"text":"Variance","value":"B"},{"text":"Coefficient of viariation","value":"C"},{"text":"Corrected atandard deviation","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":234858,"question":"Which measure of disperesion is considered as the best genereal purpose measure of dispersion.","choices":[{"text":"Range","value":"A"},{"text":"Semi interquartile range","value":"B"},{"text":"Standard deviation","value":"C"},{"text":"Mean deviation","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":234857,"question":"If the third moment about mean is zero ( m3 = 0) , then the distribution is.","choices":[{"text":"Mesokurtic","value":"A"},{"text":"Positively skewed","value":"B"},{"text":"Symmetrical","value":"C"},{"text":"Negatively skewed","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":234856,"question":"The mean deviation is least if deviations are taken from","choices":[{"text":"A.M","value":"A"},{"text":"Mode","value":"B"},{"text":"G.M","value":"C"},{"text":"Median","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":234855,"question":"For a moderately skewed dsitribution, whihc of the following emprical formula holds.","choices":[{"text":"M.D. = 4/5(S.D)","value":"A"},{"text":"Q.D. = 2/3 (S.D)","value":"B"},{"text":"Q.D . = 5/6 (M.D.)","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":234854,"question":"If X and Y are independent, than Var ( X -Y) is equal to.","choices":[{"text":"Var (X) + Var (Y)","value":"A"},{"text":"Var (X) - Var (Y)","value":"B"},{"text":"Var (X+ Y)","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":234853,"question":"Which of the following measures of dispersion is independent of the units employed.","choices":[{"text":"Standard deviation","value":"A"},{"text":"Quartile deviation","value":"B"},{"text":"<sub>Coefficient of variation</sub>","value":"C"},{"text":"Variance","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":234852,"question":"the standard deviation is independent of.","choices":[{"text":"Change of origin","value":"A"},{"text":"Change of scale of measurement","value":"B"},{"text":"Change origin and scale of meaturement","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":234851,"question":"Range can be calculated in open-end classes.","choices":[{"text":"Never","value":"A"},{"text":"Always","value":"B"},{"text":"Often","value":"C"},{"text":"Seldom","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":234850,"question":"The sum of absolute deviations is a minimum if these deviations are taken from the","choices":[{"text":"Mean","value":"A"},{"text":"Mode","value":"B"},{"text":"Median","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":234849,"question":"The sum of absolute deviations is a minimum if these deviations are taken from the","choices":[{"text":"Mean","value":"A"},{"text":"Mode","value":"B"},{"text":"Median","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":3}]