Line Fitting and Data Interpretation Review 1 Exercise

Line Fitting and Data Interpretation Review 1

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Line Fitting and Data Interpretation Review 1

Review key concepts of fitting lines to data and interpreting scatter plots. Consolidate skills in slope, intercepts, and linear trends.

Questions

  1. MultiChoice

    Which scatter plot model represents a constant negative linear trend?

  2. MultiChoice

    If a line of best fit fits data very well, what can be said about the scatter plot residuals?

  3. MultiChoice

    Given data points (2, 5), (4, 9), (6, 13), what is the slope of the linear trend line?

  4. MultiChoice

    What is the y-intercept for the line passing through (2, 5), (4, 9), (6, 13)?

  5. MultiChoice

    Which of the following is an example of bivariate data?

  6. MultiChoice

    If a line of best fit has equation y = -0.75x + 12, what is the predicted y-value when x = 8?

  7. MultiChoice

    What does a positive correlation between two variables imply?

  8. MultiChoice

    When fitting a trend line manually, why should you avoid simply drawing from the minimum to maximum point?

  9. MultiChoice

    If a dataset spans x = 10 to x = 50, estimating y at x = 30 is called:

  10. MultiChoice

    If a dataset spans x = 10 to x = 50, estimating y at x = 90 is called:

  11. MultiChoice

    A scatter plot has a linear model y = 2.2x + 15. What is the expected change in y if x increases by 5?

  12. MultiChoice

    Which value of slope indicates the steepest downward trend line?