EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -The population characteristic of interest is called a parameter and the corresponding sample characteristic is the sample statistic or parameter estimate.

Detailed explanation-2: -A parameter is a number describing a whole population (e.g., population mean), while a statistic is a number describing a sample (e.g., sample mean). The goal of quantitative research is to understand characteristics of populations by finding parameters.

Detailed explanation-3: -A population parameter in statistics describes a group or population. Population parameter is a fixed, but unknown characteristic describing the distribution for all values of an entire group. This should not be confused by parameters in other types of math.

Detailed explanation-4: -A statistic refers to measures about the sample, while a parameter refers to measures about the population.

Detailed explanation-5: -A sample is used in statistical testing when the population size is too large for all members or observations to be included in the test. The sample is an unbiased subset of the population that best represents the whole data.