Isotach are lines of equal wind speed
In one way ANOVA, σ2 is estimated by:
Using the method of semi-averages, secular trend is measured when:
For a group of 100 students, the mean and standard deviation of scores were found to be 30 and 5 respectively. Later on it was discovered that the scor...
If Z1, Z2,…Zn are n independent standard normal variates, then Σni=1 Z2i will follow:
A physical instructor claims that the mean weight of students in school is greater than 82 kg with standard deviation 20. If a sample of size 81 studen...
If mean and mode of the distribution is 32 and 21, then the distribution:
If the first, second and third moment about origin are 2, 8 and 14. respectively, then Karl Pearson gamma coefficient of skewness y1 is:
For the given figures of production of a sugar factory, the estimate of the production for 1976 using straight line trend with origin at the year 1972 b...
For the production data
Year: 1 2 3 ...
The deseasonalised time - series data will have only trend (T), cyclical (C) and irregular (I) components and is expressed as:
