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Unformatted text preview: Variable- is any characteristic that can be assigned a number or category. pg. 13 Numerical Data- Data that can be represented by numbers. Ex: Age, distance, amounts, etc. p.13 Categorical Data- Data that would be represented in terms of categories. Ex: Color, food, types of things, etc. p.13 Measurement (quantitative)- a variable that takes on numeric values p. 13 Count- A third type of variable that could be thought of as a subset of the measurement variable. The values would be numeric, but specifically whole numbers . p.13 Verbs of Statistics- gathering, organizing, analyzing and interpreting data collected. Nouns of Statistics- mean, median, mode, range and outlier of the data collected is considered to be the ''nouns'' of statistics. Process of Statistical Investigation- techniques and tools that aid in the collection, organization, summarization, and interpretation of a collection of information referred to as data. p. 1 Binary Categorical Data- There are only two possible response categories (Ex. yes or no, male or female). This data is usually displayed using a back-to-back bar graph. p.16 Stacked Bar Graph- shows data in a relative or "part-to-whole" perspective where each individual segment represents a particular part and all segments combined make up the whole. pg 18 Read Question - requires the respondent to read information from the table to determine a solution. Can be used to focus student's attention on the structure and organization of the data presented in the summarizing display. (read data right off of graph). pg 32 Derive Question - some type of computation involving information read from the table must be performed in order to determine a solution. requires students to use mathematical concepts and skills to "read between the data". pg 33 Interpret Question - requires an extension, prediction or inference to "read beyond the data". pg 33 Variability- the spread of the data; includes the range of the data, any groups or clusters of data, any gaps in the data, a center, or a most common value p. 42-43 Dot Plot (line plot) is a simple way to visually display the distribution of a small set of measurment data. pg 41 Grouped Frequency Distribution is an alternative method for organizing large data sets by condensing the data using a grouping strategy. In this method, each data value is assigned to an interval or category and then presented in a condensed form. pg 55 Histogram - used to organize large numerical data sets. A graphical display of the information found in a grouped frequency table. pp. 55 Stem-and-Leaf Plot - visual display of the distributon of the elements of a set of measurement data pp. 43 (organize numerical data) Conditional- information, that is, information about one variable knowing or given certain conditions. pg....
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This note was uploaded on 03/10/2010 for the course MATH 2650 taught by Professor Browning during the Spring '10 term at Western Michigan.
- Spring '10
- Box-And-Whisker Plots