Question
Which of the following methods to measure seasonal
variations comparatively utilizes the given data less?Solution
The ratio-to-moving-average (RMA) forecasting method is a simple and widely used technique for predicting future values of a time series. It involvesĀ dividing the actual value of a variable by its moving average over a specified period of time, and using this ratio as a forecast for the next period.
Which of the following statement is true for NRR?
The most appropriate diagram to represent data relative to monthly expenditure on different items of a family is -
If the salary of a person in the base year is Rs. 2000 per annuli and in the current year Rs. 5000. The CPI is 325, then the allowance required to maint...
Laspeyre's formula has ___________ bias and Paasche's formula has _________ bias.
Infant mortality rate is the ratio of -
Which of the following is not true for geometric mean?
Two random variables x and y have the following regression equations -
3x + 2y ā 26 = 0
6x + y ā 31 = 0
then, the mean values o...
A statistician collects data on production of rice from 1990 to 20 2 0 and classifies it year wise. Which of the following type of classification of da...
IfĀ Qā, Qā Ā and Qā Ā are three quartiles of a frequency distribution, which of the following holds if the distribution is negatively skewed?
...The variance of first n natural numbers is -
