Graphs

• What is the first task in creating a frequency distribution table?

  Create a frequency distribution table
• What is the purpose of a histogram?

  To display frequency of data
• What type of data is a line graph used for?

  Continuous data
• Where is the independent variable usually placed on a line graph?

  On the X axis
• What does a straight line from bottom left to top right in a scattergram indicate?

  A positive correlation
• What does a straight line from top left to bottom right in a scattergram indicate?

  A negative correlation
• What should you include when sketching a scattergram for a correlational study?

  Label both axes and give a title
• What is the most appropriate graph for showing the mean number of words recalled in a memory experiment?

  Bar chart
• What is the most appropriate graph for showing the frequency of behaviors in a naturalistic observation?

  Bar chart
• What is the most appropriate graph for showing participants' stress scores and illness scores?

  Scattergram
• What is the most appropriate graph for comparing the number of male and female students studying?

  Bar chart
• What effect do extreme scores have on distributions?

  They can skew distributions
• How can you tell if a distribution is negatively skewed?

  If the mean is lower than the mode
• What does a negatively skewed distribution look like?

  Long tail trails to the left
• How can you tell if a distribution is positively skewed?

  If the mean is higher than the mode
• What is the most appropriate graph for showing the number of participants scoring in specific ranges on a recall test?

  Histogram
• What does a positively skewed distribution look like?

  Long tail trails to the right
• What are the key characteristics of bar charts?

  • Represent categorical data
  • Bars do not touch
  • X axis shows categories
  • Y axis shows frequency
• What are the key characteristics of histograms?

  • Used for interval data
  • Bars touch to show continuity
  • X axis shows continuous values
  • Y axis shows frequency
• What can be concluded from the mean and standard deviation of participants who drank water versus energy drinks?

  Water drinkers recalled more words
• What is the mean number of words recalled by participants who drank an energy drink?

  $3.4$
• What is the standard deviation for participants who drank water?

  $3.4$
• What is the standard deviation for participants who drank an energy drink?

  $1.2$
• What are the learning objectives related to graphs and distributions?

  • Identify normal, positively, and negatively skewed distributions
  • Understand data presentation methods
  • Analyze appropriate data presentation forms
  • Create graphical representations of data sets
• What should be done first when creating a histogram?

  Determine class intervals
• How should scores be arranged to determine class intervals?

  Place the scores in order
• What is the purpose of the video linked in the study material?

  • To explain different types of tables and graphs