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Sequential Sampling
Under this method, a number of sample lots are drawn one after another from a universe depending on the results of the earlier samples. Such sampling is generally adopted in statistical quality contral. If the first sample is clearly acceptable, no new sample is drawn on the other hand if it is completed unacceptable the lot is rejected. However if the initial oft is of a doubtful marginal character falling in between acceptance and rejection limits, a second on final acceptance or rejection the lot. Such sampling can be based on any of the random or non-random methods of selection.
Quota sampling Under this method enumerators shall select the respondents in place of those not available, as per the quota fixed according to guide lines provided to them.
Test for Equality of Proportions For example, we may want to test whether the percentage of smokers (p 1 ) among the males equals the percentage of female smokers (p 2 ). W
The 4 assumptions of regression: 1. Variables are normally distributed 2. Linear relationship between the independent and dependent variables 3. Homosced
What statistics can be obtained from a circulatory lab?
#questionMaximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0..
The box plot displays the diversity of data for the income; the data ranges from 20 being the minimum value and 1110 being the maximum value. The box plot is positively skewed at 4
Using a random sample of 670 individuals for the population of people in the workforce in 1976, we want to estimate the impact of education on wages. Let wage denote hourly wage in
You are going to purchase a part from a specialty vendor. Your company needs a C p of at least 1.67 on a critical dimension of the part. The dimensional specification for this p
the two regrassion line will pass through the point (x,y)
In the case of permanent magnet DC motor whose stator consists of a permanent magnet we can take the field current to be constant (i.e. a constant magnetic field) and it can be sho
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