Descriptive Statistics Quiz

Descriptive statistics help describe and understand the features of a specific data set by giving short summaries about the sample and measures of the data. Two basic categories of measures Measures of central tendency - mean, median, and ______

Measures of Variability or Spread Data - are the facts and figures collected, analyzed, and summarized for presentation and interpretation. Variable - A characteristic or a quantity of interest that can take on different ______

Observation - is a set of values corresponding to a set of ______

Variation - is the difference in a variable measured over observations (time, customers, items, etc.). Type of Data 1. Population and Sample Data - Data can be categorized in several ways based on how they are collected, and the type collected. In many cases, it is not feasible to collect data from the population of all elements of interest. In such instances, we collect data from a subset of the population known as a sample. - a representative sample can be gathered by random sampling of the population ______

Data are considered quantitative data if numeric and arithmetic operations, such as addition, subtraction, multiplication, and division, can be performed on them. - CATEGORICAL DATA If arithmetic operations cannot be performed on the data, they are ______