5 Written Questions

1. represents how far a typical data point is from the mean
2. shows that an independent variable causes change in the dependent variable; ex cause and effect
3. median of the lower half of the data
4. measures how far the typical data point is from the mean
5. include the point that is slightly away from the LOBF

5 Matching Questions

1. Skewed Distributions
2. Circle Graph (pie chart)
3. Correlation Coefficient (r)
4. Presumed Relationship
5. Q3

1. a an indicator of strength and direction
2. b median of the upper set of the data
3. c used for percentages of a total
4. d somtimes two variables seem to have a logical and causal relationship, but common causes are hard to find
5. e Assymetrical distribution where direction shows skew type; ex. right skewed, left skewed

5 Multiple Choice Questions

1. hidden variables that help prove a presumed relationship
   1. Extraneous Variables
   2. Dependent Variable
   3. Extrapolation
   4. Independent Variable
2. ignore the point outside that is the furthest away from the LOBF
   1. Bar Graph
   2. Regression
   3. Extrapolation
   4. Interpolation
3. Used to display discrete data
   1. Bar Graph
   2. Binwidth
   3. Histogram
   4. Range
4. fitting a line or curve to a set of data
   1. Bar Graph
   2. Residual
   3. Regression
   4. Range
5. Height of bar is roughly equal; each outcome has similar frequency
   1. Mound Shape Distribution
   2. Skewed Distributions
   3. Standard Deviation
   4. Uniform Distribution

5 True/False Questions

1. Residual → difference bewteen the largest and smallest value

   True        False

2. Cause and Effect Relationship → Perfect correlation between data and mathematical model

   True        False

3. Coefficient of Determination (r2) → an indicator of strength and direction

   True        False

4. Box and Whisker Plots → Appears to be a relationship bewteen two variables, but there are external variables that create relationship

   True        False

5. On a stem and leaf plot the leaves describe the __________ . → Perfect correlation between data and mathematical model

   True        False