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Time by scooter = [(0.20 × 600)/40] = (120/40) = 3 hours
Time by train = [(0.80 × 600)/120] = (480/120) = 4 hours
Average speed = [(Total distance)/(Total time)] = [600/(3 + 4)] = (600/7) ~ 86 km/h
If the third quartile of the following data set 7,10,7,8,9 is 9.5, then the value of quartile deviation is:
The probability of getting a total of 7 on two dice thrown together is:
28 If r ₁₂ = +0.80, r13 = -0.40 and r23 = -0.56, then the square of multiple correlation coefficient (correct to four decimal places) R2...
If Z follows standard normal distribution with mean 0 and variance 1, then Z2 follows:
For ANOVA table
the F - statistics is:
For the ANOVA which of the following options is INCORRECT.
1. Null hypothesis H0 : μ1 = μ2 = ... = μn
2. F ...
Identify, from the following, the moment used as a measure of skewness?
If the second and third moment about the origin are 8 and 18 and the third moment about mean is -14 , then the first moment about the origin is:
