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From quantity I, CP of mobile = 100x 6000 * 90/100 = 100x * 108/100 x = 50 CP of mobile = 100 * 50 = 5000 If no discount given, Profit = 6000 – 5000 = 1000 Profit % = 1000/5000 * 100 = 20% From quantity II, MP of article = 5x CP of article = 4x SP of article = 5x * 85/100 = 4.25x Profit percentage = (4.25x – 4x)/4x * 100 = 6.25% Quantity I > quantity II
For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:
Following two statements are related to regression coefficient
(I) Independent of the change of origin
(II) Independent of the change of scale
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For the recorded observation, the coefficient of variation is 0.2 and the variance is 16. The arithmetic mean is:
If the random sample of size n is drawn without replacement from a finite population of size N, the correction factor for standard error of sample mean...
Two data set of size 9 and 6 have standard deviation 3 and 4 respectively and arithmetic means 3 and 3 respectively. The standard deviation of combined...
The arithmetic mean of the following frequency distribution of number of accidents X on week working days is:
X:Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â...
The grouped data for the observation are as follows.
Class :Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2-4Â Â Â Â Â Â Â Â 4-6Â Â Â Â Â Â Â Â Â 6-8...
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is: