Graph and Statistics Vocabulary Review

 

ALL 21 vocabulary WORDS will be in a WORD BANK

The test will have 10 fill in the blank vocabulary words (some words will not be used)

TWO words FROM MEASURES of CENTRAL TENDENCY will have to be defined in their own words

 

Measures of Central Tendency

  1. Mean:  MOST COMMON MEASURE of central tendency.  It is an average, so it describes all of the data in a data set.
  2. Average:  a common term used to mean a measure of central tendency.
  3. Median:  The MIDDLE NUMBER or the mean of the MIDDLE TWO NUMBERS of the ORDERED data in a set.
  4. Mode:  the number or numbers that occur MOST frequently in the data set
  5. Range:  Describes how the data varies.  It is found by getting the difference of the GREATEST number in the data and the SMALLEST number in the data.  
  6. Outlier:  EXTREMELY HIGH or LOW values in a set of data.  An outlier increases or decreases the mean.

 

Graphs

  1. Graph:  A visual way to display data
  2. Frequency:  Shows the number of times each item or number appears
  3. Key:  used to show how stems and leaves are read in a stem and leaf plot.
  4. Bar graph:  used to COMPARE categories of data
  5. Line Graph:  Use to show how data CHANGES OVER a period of TIME
  6. Stem-and-leaf plot:  displays data organized from LEAST to GREATEST and organized by PLACE VALUE
  7. Stems:  Numbers (or digits) written to the LEFT of the vertical rule of a stem and leaf plot
  8. Leaves:  The numbers (or digits) written to the RIGHT of the vertical rule of a stem and leaf plot.
  9. Line Plot:  Shows how many times each number occurs in the data.
  10. X-axis: horizontal line on a graph (side to side)
  11. Y-axis:  vertical line on a graph (up and down).  This is where the SCALE is written on the graph

 

Integers

  1. Integers:  The set of positive whole numbers, their opposites, and zero
  2. Opposites:  The numbers that are the same distance from 0 on a number line, but in opposite directions.
  3. Positive Numbers: represents data that are greater than 0.  Written with a Ò+Ó sign or no sign at all. Example:  +2 positive two or  2 = two
  4. Negative Numbers:  represents data that are less than 0.  A negative number is written with a Ò-Ò sign.  Example:  -2 = negative two

 

 

Graph and Statistics TEST REVIEW

 

Students should have examples, notes, and work on the below information in their math binder or spiral

 

  1. Be able to read a frequency table and identify numbers in the table
  2. Be able to read a bar graph and compare categories that are greater, smaller, twice as big as another category or twice as small as another category
  3. Be able to read data on a line graph and predict if data is increasing or decreasing
  4. Be able to read numbers on a stem and leaf plot.  Identify the greatest and smallest number on the stem and leaf. 
  5. Identify data on a stem and leaf that is greater or smaller than the other numbers
  6. Be able to read data from a line plot and determine data greater or smaller than the other numbers
  7. Be able to find the mean, median, mode, range, outlier of a set of data
  8. Be able to find the mean with or without the outlier
  9. Be able to describe an integer situation. 
    1. Example:  Losing 10 pounds = -10
    2. Example:  Gaining 15 yards = 15 or + 15
  10. Be able to decide which graph is best for displaying data.
    1. Example:  Which graph is best for displaying ÒfavoriteÓ color = bar graph
    2. Example:  Which graph is best for displaying Òchange over timeÓ = line graph
    3. Example:  Which graph is best for displaying/recording test scores as they are being graded = line plot
    4. Example:  Which graph is best for displaying points scored in a season = stem and leaf plot

 

PRE-AP:  Will also have to

 

  1. Make a simple line plot from a set of data – and answer 1-2 questions
  2. Make a line graph from a set of data – and answer 1-2 questions
  3. Graph (with a DOT) integers on a number line

 

 

Students should have notes and practice work on all the above definitions, statistics and graph work in the ÒnotesÓ section of their binder (hopefully highlighted) and in their assignment and warm up section of their binder.

 

All the above info. Will be on the test.

We will review all material in class before the test

 

 

Additional practice comes from Ch 2 in Course I Book

Some of Ch 1 and some of Ch 11 in Course 2 Book

 

 
Last Modified: Saturday, Sep. 19, 2009
 
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