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Statistics Project

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Histogram - a bar graph that uses even intervals and no spacing ... ( ie. How many like hot dogs, popcorn, etc. from your survey? ... – PowerPoint PPT presentation

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Title: Statistics Project


1
Statistics Project
  • Ms. Mattis and Ms. Sagers Classes

2
Definitions
  • Histogram - a bar graph that uses even intervals
    and no spacing
  • Circle Graph - a pie graph partitioned usually
    by percentages
  • Pictograph- a bar graph that uses pictures
    instead of bars
  • Line graph- points that are plotted on the
    coordinate plane and connected by straight lines

3
Definitions Contd
  • Bar Graph- a set of data displayed using
    horizontal or vertical bars of equal width and
    with equal spacing between the bars
  • Scatter Plot- data points plotted on a set of
    axis. These may have positive, negative or no
    correlation.
  • Frequency Histogram- a histogram that depicts how
    often events occur in a given interval

4
YOUR PROJECT
  • The goal of this integrated project is for
    students to become familiar with using excel for
    reporting and displaying data.
  • For directions, click here.
  • Here is the grading rubric.

5
Sample Excel Project
  • After collecting your data you need to create
    different graphs as shown here.

6
Project Extension
  • Obtain a picture of a crowd from a magazine.
    Choose a relatively large crowd (ie. From a
    sporting event, concert, convention, etc. Please
    seek teacher approval when you get a picture that
    you would like to use.)
  • Cut the picture out so that it is in the shape of
    a square or rectangle. Then mark off equal
    squares within the crowd using a black marker.
    Count the number of squares you have, then choose
    one square and count the number of whole people
    (ie. Their entire head is within the box you
    drew) within one particular square. Multiply the
    number of squares by the number of estimated
    people in the one square you chose to count.
    Your result is an estimate of the total number of
    people in the picture.

7
Extension Calculations
  • You are going to use the total estimated number
    of people to calculate general assumptions.
  • Based on your survey question, (suppose you
    selected favorite food items) you will determine
    the percent of people in your crowd who like a
    certain food. For example, if the data you
    collected said that 10 of the people you
    surveyed like pizza, you will then assume that
    10 of the people in your crowd like pizza as
    well. So you would calculate 10 of the total
    crowd population. Click here for an example
    calculation.
  • Continue to calculate the number of people in
    your crowd who have preferences for the rest of
    the data you collected. (ie. How many like hot
    dogs, popcorn, etc. from your survey?) Of
    course, you may not have selected favorite foods
    so your preferences will differ from other
    students, as will your percents.

8
MORE Definitions!!!
  • Stem and leaf plot- a chart that organizes data
    into two columns from smallest to largest
    according to intervals. The stem is placed on
    the left hand side of a vertical line and the
    leaf is placed on the right hand side of the
    line.
  • Box and whisker plot- a graph that displays the
    high and low values of data along with the first,
    second and third quartiles. The second quartile
    is also known as the median (middle).

9
Creating graphs from your class project grades
  • Now that you have a list of each students
    project grade you are going to create a stem and
    leaf plot by hand and a box and whisker plot
    using your graphing calculators. You will
    recreate these graphs on the graph paper
    provided.
  • See directions
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