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Cluster Sampling and Area Sampling: Cluster sampling involves grouping the population and then selecting the group or the cluster rather than individual elements for inclusion in the sample. The clustering approach can however make the sampling procedure relatively easier and increase the efficiency of fieldwork especially in the case of personal interviews,
Area sampling is generally done when the total geographical area of interest is big one. We first divide the total area into a number of smaller non over lapping areas generally called geographical clusters then a number of these smaller areas are randomly selected and all units in the small areas are included in the sample.
Let f (?) be the production function associated with a single-output technology, and let Y be the production set. Show that Y satisfies constant returns to scale if and only if f (
Have Minitab run a multiple linear regression to predict the margin of victory using the four predictors (home team record, away team record, stat1diff, stat2diff). Store the resi
find the variance of least square estimator beta hat for general linear regression model when k=2 in matrix form?
Measures of Dispersion (Variation) A measure of dispersion is to measure the spread among values of observations in a data set. There are three commonly used measures of disper
Vital statistics may be interpreted in two ways-in a broader sense it refers to all types of population statistics by whatever mode collected while in a narrower sense it refers o
List all possible simple random samples of size n = 2 that can be selected from the population {0, 1, 2, 3, 4}. Calculate 2 s for the population and Var y( ) for the sample.
Find Karl Pearson's correlation coefficient between the sales and expenses from the data given below:
Your firm purchased a line of computer equipment for $1.5M four years ago. It is assigned a CCA rate of 20% and the firm has a tax rate of 35%. At the end of this year (year 4 for
Definition of statistics according to Prof. Ya lu chan
The waiting time for an incoming call at the front desk of mathematics Department follows an exponential distribution. During business hours, the average of the waiting times is 10
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