Data Presentation and Statistics

What is the main purpose of a frequency distribution?

To summarize large volumes of data values

What type of data requires categorization before creating a frequency distribution?

Quantitative data measured on an interval or ratio scale

What is the term for the total number of occurrences that lie above or below certain key values?

Cumulative frequency distribution

What is the purpose of determining the number of classes in constructing a frequency distribution?

To group the data into manageable categories Signup and view all the answers

What type of statistical attributes are represented in a contingency table?

Qualitative statistical attributes from which at least one of them is polynomic Signup and view all the answers

What is the term for the percentage of values that occur in each class in a frequency distribution?

Relative frequency Signup and view all the answers

What type of data is a bar chart commonly used to present?

Nominal and ordinal scaled data Signup and view all the answers

What type of data is a pie chart commonly used to present?

Interval- or ratio-scaled data Signup and view all the answers

What is the primary purpose of a time series graph?

To display data that has been measured over time Signup and view all the answers

What is a key characteristic of a bar chart?

The bars are separated to emphasize frequencies for distinct categories Signup and view all the answers

What is a benefit of using a pie chart?

It is effective for emphasizing the relative sizes of the data components Signup and view all the answers

What is the method of sampling where the population is divided into groups called strata and then a sample is taken from each stratum?

Stratified sampling Signup and view all the answers

What type of data can be categorized into different groups or levels?

Nominal data Signup and view all the answers

Which type of data has a fixed numerical value?

Constant Signup and view all the answers

What is the purpose of descriptive statistics?

To present and summarize the data Signup and view all the answers

What type of sampling involves randomly selecting a starting point and taking every n-th piece of data from a listing of the population?

Systematic sampling Signup and view all the answers

What type of data is collected specifically for the analysis desired?

Primary data Signup and view all the answers