In a frequency distribution, what percent of the total number of observations lies between the first and third quartiles?
The distance between the first quartile (Q1) and the third quartile (Q3) is referred to as the interquartile range (IQR). The first quartile (Q1) or the lower quartile, is the value under which 25% of data points are found when they are arranged in increasing order. The third quartile (Q3) or upper quartile, is the value under which 75% of data points are found when arranged in increasing order. As such, the IQR encompasses the middle 50% of the data. The interquartile range give a better idea of the dispersion of data only if there are outliers .
Recession in industry is associated with the:
The second and fourth moment about mean for a distribution are 4 and 18 respectively. What is the value of Pearson's coefficient of skewness β ₂ ? ...
Which one is not non-probability sample method
For making frequency distribution, the number of classes used depends upon:
Which of the following satisfies the time and factor reversal test?
With which characteristic movement of a time series would you associate increasing demand of smaller automobiles?
By the method of moving averages, the seasonal index for four quarters equals to:
A Poisson distribution has a double mode at x = 1 and x = 2. The probability for x = 1 or for x = 2 of these two values is:
At a reservation counter. passengers are arriving for booking the tickets in a Poisson fashion with mean rate 60 per hour. The kurtosis of the inter-ar...
