Types of Data

• What type of data is qualitative data?

  Non-numerical data illustrating quality
• What is a key characteristic of qualitative data?

  It is descriptive and wordy
• What are the strengths and weaknesses of qualitative data?

  Strengths:

  • Detailed insights into behavior

  Weaknesses:

  • Subjective and open to bias
  • Difficult to analyze and compare
  • Time-consuming
• What type of data is quantitative data?

  Numerical data illustrating quantity
• What is a key characteristic of quantitative data?

  It is easy to analyze and compare
• What are the strengths and weaknesses of quantitative data?

  Strengths:

  • Easy to analyze and find trends
  • Objective and scientific
  • Less open to bias

  Weaknesses:

  • Not detailed
  • Doesn't explain reasons behind behavior
• What are descriptive statistics used for?

  To describe basic features of data
• What does the mode represent in a data set?

  The most frequent score in a data set
• What are the strengths and weaknesses of the mode?

  Strengths:

  • Not skewed by extreme scores

  Weaknesses:

  • Does not represent all scores
  • Only reflects the most common score
• How is the median determined in a data set?

  It is the middle score when ranked
• What are the strengths and weaknesses of the median?

  Strengths:

  • Not skewed by extreme scores

  Weaknesses:

  • Only considers the middle value
  • Does not represent all scores
• How is the mean calculated?

  Add all scores and divide by the number
• What are the strengths and weaknesses of the mean?

  Strengths:

  • Takes into account every score

  Weaknesses:

  • Can be skewed by outliers
• What does the range measure in a data set?

  The difference between smallest and largest scores
• What are the strengths and weaknesses of the range?

  Strengths:

  • Quick to calculate

  Weaknesses:

  • Can be skewed by outliers
• What does standard deviation indicate about a data set?

  The average difference from the mean
• What are the strengths and weaknesses of standard deviation?

  Strengths:

  • More representative of data

  Weaknesses:

  • Can be skewed by outliers
• What is a bar chart used for?

  Comparing data in categories
• What is a key feature of a bar chart?

  Bars shouldn’t touch
• What is a histogram used for?

  Data that is continuous
• What is a key feature of a histogram?

  Bars should touch
• What is a pie chart used for?

  Representing the proportion of a whole
• What might you need to do with a pie chart?

  Estimate segment percentages
• What is a scattergraph used for?

  Correlational data
• What is required for a scattergraph?

  One point for each pair of scores
• What is primary data?

  Data collected directly from participants
• What is secondary data?

  Data collected for another purpose
• What is the difference between primary and secondary data?

  • Primary data: Collected directly for the study
  • Secondary data: Collected for another purpose