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Least squares method of fitting a line ( the line of best fit or the regression line) through the scatter diagram is a method which minimizes the sum of squared vertical deviations from the fitted lines. In other words the line to be fitted will pass through the points of the scatter diagram in such a fashion that the sum of the squares of the vertical deviations of these points from the line will be a minimum
CORRELATION & REGRESSION: 1) What do you mean by the term correlation? 2) Point out the differences between coefficient of correlation and regression. 3) If the correl
Where an element of randomness is introduce by suing random numbers to pick up the unit with which to start this process of sampling is known as systematic sampling.
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What is F2 Test, These tests were based on the assumption that the samples were drawn from normally distributed populations, or more accurately that the sample means were normally
If there are 12 numbered balls in a basket (0-11), and you get 6 chances to pick a ball what are the odds to get two of the same number, 3 of the same number, 4, 5 and 6. I would
A scientist claims that the mean incubation period for the eggs of a species of birds is more than 46 days.
For our class homework we prepared a 3-month forecast for sales (12 months with actual sales for each month). What or how do we figure the absolute deviation of the 3-month foreast
Introduce the aim of this section of the report including an explanation of the data to be analysed. • Use Excel to produce a box and whisker plot for the two sets of booking data
whatis seasonal variation?show it with graphs?
Stratified Sampling: If the population from which a sample is to be drawn does not constitute a homogenous group, then stratified sampling technique is applied so as to obtain a re
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