Statistics (Review)

This area of statistics is very important because if we simply presented our raw data it would be hard to visualize what the data was showing, especially if there was a lot of it. This therefore enables us to present the data in a more meaningful way, which allows simpler interpretation of the data. What area of statistics is this?

• Descriptive Statistics

• Inferential statistics

This area of statistics has techniques that allow us to use these samples to make generalizations about the populations from which the samples were drawn. what area of statistics is this?

• Descriptive Statistics

• Inferential Statistics

A ___________ is a measurable characteristic of a or a population, such as a mean or a standard deviation.

• Sample

• statistic

• variable

• parameter

A _______________ is a characteristic of a sample. Generally, a statistic is used to estimate the value of a population parameter.

• sample

• statistic

• mean

• parameter

The symbol used to represent sample standard deviation is ______.

• s

•  $s^2$  

•  $\sigma$  

•  $\sigma^2$  

The symbol used to represent population mean is ___________.

•  $\mu$  

•  $\overline{x}$  

•  $s^2$  

• s

The symbol used to represent sample variance is ________.

• s

•  $s^2$  

•  $\sigma$  

•  $\overline{x}$  

The entire set of individual or objects of interest or the measurements obtained from all individuals or objects of interest.

• sample

• population

• parameter

• statistic

A portion, or a part, of the populations of interest.

• sample

• population

• parameter

• statistic

________________ are variables that can be placed into distinct categories, according to some characteristic or attribute. These variables are usually non-numeric

• quantitative

• qualitative