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Describe how variables are categorized, counted, or measured. Classes data into groups that are mutually exclusive, no order or rank is imposed. Classes data into groups that can be ranked but no precise differences between ranks exist. Ranks data with precise differences but no true zero exists.
- Chapter 1: Introduction to Statistics Flashcards - Quizlet
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- 1.1: Definitions of Statistics, Probability, and Key Terms
a set of observations (a set of possible outcomes); most...
- Chapter 1: Introduction to Statistics Flashcards - Quizlet
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a set of observations (a set of possible outcomes); most data can be put into two groups: qualitative (an attribute whose value is indicated by a label) or quantitative (an attribute whose value is indicated by a number). Quantitative data can be separated into two subgroups: discrete and continuous.
Putting all 50 states into groups and sampling each group. Using a computer program to randomly select people from a phonebook to sample. True or False: A group of subjects selected from the group of all subjects under study is called a sample. True or False: Four basic sampling methods are random, cluster, systematic, and grouped.
- Grouped Data
- Calculating Class Interval
- Class Limits and Class Boundaries
Grouped data is data that has been organized into groups known as classes. Grouped data has been ‘classified’ and thus some level of data analysis has taken place, which means that the data is no longer raw. A data class is group of data which is related by some user defined property. For example, if you were collecting the ages of the people you m...
Given a set of raw or ungrouped data, how would you group that data into suitable classes that are easy to work with and at the same time meaningful? The first step is to determine how many classes you want to have. Next, you subtract the lowest value in the data set from the highest value in the data set and then you divide by the number of classe...
Class limits refer to the actual values that you see in the table. Taking an example of the table above, 1 and 3 would be the class limits of the first class. Class limits are divided into two categories: lower class limit and upper class limit. In the table above, for the first class, 1 is the lower class limit while 3is the upper class limit. On ...
Grouped data means the data (or information) given in the form of class intervals such as 0-20, 20-40 and so on. Ungrouped data is defined as the data given as individual points (i.e. values or numbers) such as 15, 63, 34, 20, 25, and so on.
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There are a number of ways to group or organize each type of data to make it more useful. Univariate data likely to be used for evaluating the mean or the range of a population is generally organized in increasing or decreasing magnitude or alphabetically.
