STATISTICAL TECHNIQUES AND TOOLS
SAMPLING DISTRIBUTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
bias of the estimates made from the data collected in the poll.
|
|
|
variability of the estimates made from the data collected in the poll.
|
|
|
variability of opinions in the sample.
|
|
|
variability of opinions in the population.
|
Detailed explanation-1: -The correct answer is (b) variability of the estimates made from the data collected in the poll.
Detailed explanation-2: -As the sample sizes increase, the variability of each sampling distribution decreases so that they become increasingly more leptokurtic. The range of the sampling distribution is smaller than the range of the original population.
Detailed explanation-3: -In summary, as the sample size increases, the distribution of the estimates becomes more concentrated. Consequently, a larger sample size generally improves the accuracy of the estimation procedure. b.
Detailed explanation-4: -The effect of the variability within the population can be reduced by increasing the sample size to make it more representative of the survey population.