Question

Two questions follow. These questions are independent of each other; one question is in no way related to the other.

• In summarizing the results of a study on website usage, those results that put the website in good light are reported while those results that show needs for improvement are not. True of false: This is an example of sample error. ["TRUE", "FALSE"]          
• One of the following is needed to conduct statistical inference. Which one? ["additional assumptions about the sample", "repeated sampling", "additional assumptions about the population"]          

Answer 1

1. False

Sampling error occurred during observing a sample. The sample error is the difference between sample statistics and population statistics.

Since sample error occurs during the selection of the sample. In this case, a particular type of observations are recorded another type are not recorded. So, this is not a case of sampling. Hence it is not an example of sample error.

2. additional assumptions about the population

To conduct a statistical inference one should make assumptions about the population. Conducting statistical inference without making any assumption about the population is not possible.