Chapter 6: Collect and Organize Data

Lesson 1: Collect and Organize Data. Objective: To collect and organize data by suing fequency tables.

Lesson 2: Find Mean, Median, and Mode. Objective: To find the mean, median, and mode of a set of data.

Lesson 3: Read Line Plots. Objective: To read and organize data in line plots.

Lesson 4: Make Stem-and-Leaf Plots. Objective: To make stem-and-leaf plots.

Lesson 5: Compare Graphs. Objective: To compare data in graphs using a variety of scales.

Lesson 6: Problem Solving Strategy: Make a Graph. Objective: To solve problems by using the strategy *make a graph*.

Vocabulary: data, tally, pictograph, survey, frequency, cumulative frequency, mean, median, mode, line plot, range, outlier, stem-and-leaf plot, stem, leaf, interval, scale

**data:** information collected about people or things

**tally:** a mark used to show how often something happens

**pictograph: **a graph that uses pictures to show data

**survey:** a method of gathering data by asking questions

**frequency: **the number of times a response occurs

**cumulative frequency: **a running total of frequencies

**mean: **the average of a set of numbers, found by dividing the sum of the set by the number of addends

**median:** the middle number in an ordered set of numbers

**mode: **the number or itemin a set of data the occurs the most often

**line plot: **a graph that shows the frequency of data long a number line

**range:** the difference between the least and the greatest values in a set of data

**outlier: **a data value that stands out from the other data values in the set

**stem-and-leaf plot: **a table that shows groups of data arranged by place value

**stem: **each tens didit in a stem-and-leaf plot

**leaf: **each ones digit in a stem-and-leaf plot

**interval: **the distance between the numbers on the scale

**scale: **a series of numbers placed at fixed distances to label a graph

Our textbook website: www.harcourtschool.com

Some good practice websites:

http://www.gamequarium.com/placevalue.html

http://www.softschools.com/math/games/

www.multiplication.com

www.funbrain.com