Quickie Quiz 4

  1. Graph the following data on the graph seen further below.  The data was provided by the Micronesian seminar and is the pass rate on the College entrance examination.
x: Year (1994=0) y: PNI Pass Rate
0 40
1 29
2 41
3 42
4 69
5 69
6 75

q04_sp2001.gif (4147 bytes)

  1. Find the slope of the best fit line through the data.

    _______________________
  2. Find the intercept the best fit line through the data.

    _______________________
  3. Sketch a best fit line through the data based on the slope and intercept.

    _______________________
  4. Calculate the correlation coefficient r.

    _______________________
  5. Plot the following Chuuk State data on the same graph above.
Year (1994=0) Chuuk Pass Rate
0 29
1 23
2 23
3 16
4 24
5 28
6 27
  1. Calculate the correlation coefficient r for the Chuuk data

    ______________________
  2. Which state shows a steady improvement in pass rates?

    _______________________
  3. Which state shows a pass rate that fluctuates randomly year to year?

    _______________________

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