Question
Which of the following refers to the halo error that
tends to distort appraisals?Solution
The halo effect refers to the tendency to rate an individual highly on all factors of an appraisal due to a strong positive impression in one specific area or trait. This cognitive bias distorts the accuracy of performance evaluations.Â
The probability of getting a total of 7 on two dice thrown together is:
For the random variable X with probability density function f(x) = (x−3)2 /5; x = 3, 4, 5, the variance of X is:
If the sum of lower and upper qualities is 6 and quartile deviation is 1.5, then the value of coefficient of quartile deviation is
For frequency distribution presentation , which option is wrong.
If the third quartile of the following data set 7,10,7,8,9 is 9.5, then the value of quartile deviation is:
For the cumulative distribution function
the upper quartile point is
The mean deviation from an average A will be minimum, if A represents:
If the first, second and third moment about origin are 2, 8 and 14. respectively, then Karl Pearson gamma coefficient of skewness y1 is: