Statistics Project

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Statistics Project

• Ms. Mattis and Ms. Sagers Classes

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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

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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

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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.

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Sample Excel Project

• After collecting your data you need to create
  different graphs as shown here.

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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.

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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.

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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).

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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