# Math Review: line plots, bar graphs, mean, median, mode, range - PowerPoint PPT Presentation

1 / 17
Title:

## Math Review: line plots, bar graphs, mean, median, mode, range

Description:

### Math Review: line plots, bar graphs, mean, median, mode, range V. Martinez What is a line plot? A line plot displays data along a number line. Each x represents one ... – PowerPoint PPT presentation

Number of Views:122
Avg rating:3.0/5.0
Slides: 18
Provided by: Vicki191
Category:
Tags:
Transcript and Presenter's Notes

Title: Math Review: line plots, bar graphs, mean, median, mode, range

1
Math Review line plots, bar graphs, mean,
median, mode, range
• V. Martinez

2
What is a line plot?
• A line plot displays data along a number line.
• Each x represents one number in the data.

3
Outlier
• A number in a data set that is very different
from the other numbers.

4
Here, xs houses with pets
5
Average Number of Emails
• xx x x x x x___x___x_____x_______
___1 2 3 4 5 6 Emails sent
today
• What is the average number of emails sent today?
• Remember to find the average ADD and Divide
• What is the range?
• What is the mode?
• What is the median?

6
What is the outlier here?
7
What is the Median? text pg. 226
• The median is the middle number when the data are
listed in order.
• The number of raisins in our boxes
• 10, 26, 26, 27, 30, 32, 32, 32, 34
• x
• 30 is the median.

8
What is the mode?
• The mode is the number or numbers that occur most
often in the data.
• 10, 26, 26, 27, 30, 32, 32, 32, 34
• The mode is 32.

9
What is the range?
• The range is the difference between the greatest
and the least number in the data.
• 10, 26, 26, 27, 30, 32, 32, 32, 34
• The greatest number is 34. The least number is
10.
• 34 10 24. The range is 24.

10
What is the mean? Pg. 404
• The mean is the average. It is found by adding
all the numbers in a set and dividing by the
number of values.
• 10, 25, 20, 5, 20
• The sum is 75.
• Divide 75 by 5.
• The average or mean is 15.

11
Mean
• The blocks
• that are all
• the same
• height show
• the average
• or mean.

12
Practice at this interactive website.
• http//www.bbc.co.uk/schools/ks2bitesize/maths/act
ivities/modemedianmean.shtml
• Or here
• http//www.manatee.k12.fl.us/sites/elementary/palm
asola/mathlabtutstat1.htm

13
What is a bar graph?p 208
• A bar graph is a graph using bars to show data.
• Bar graphs can be vertical or horizontal.

14
Compare and Contrast
15
Parts of a bar graph
• Scale Numbers that show the units used on a
graph are the scale.(The numbers on the graph.)
• Interval a number which is the difference
between two consecutive numbers on the scale of a
graph. (p. 208)
• The interval is 5.
• The graph must have labels!

16
Steps for creating a bar graph.
• Choose a scale.
• Draw and label the side and bottom of the graph.
• Draw a bar on the graph for each piece of data.
• Give the graph a title. The title shold describe
the subject of the graph.

17
Make a bar graph.
• http//nces.ed.gov/nceskids/graphing/classic/bar_p
ie_data.asp?ChartTypebar
• Y axis vertical (up and down)
• X axis horizontal (across)