Descriptive statistics is used:  A. To develop information regarding the product sample using the measured data  B. To measure the data for a sample  C. To draw conclusions about the population  D. To control the variation

Descriptive statistics is used: A. To develop information regarding the product sample using the measured data. This is because descriptive statistics summarize and organize data from a sample in a way that can be understood. It provides simple summaries about the sample and the measures.

B. To measure the data for a sample. This is not entirely correct. Descriptive statistics doesn't measure data, but it is used to describe, show or summarize data in a meaningful way.

C. To draw conclusions about the population. This is not correct. Descriptive statistics is used to describe the basic features of the data in a study. It provides simple summaries about the sample and the measures. However, it does not allow us to make conclusions about the population that the data are drawn from.

D. To control the variation. This is not correct. Descriptive statistics is not used to control variation but to describe it. It can provide information about the range of variation in the data, but it does not provide a method for controlling that variation.