Homework 2 (due September 8)Last four points of homework and older posts about z-score and lookup tables.

4 points for Homework 2

Here is the list of wins for the 30 NBA wins in the 2014-15 season, including playoff wins. Find the z-score for the highest number of wins and lowest number of wins (note: list not in order) and determine if these two numbers of wins count as outliers by the following method.

If z >= 3, the value is very unusually high.
If z >= 2, the value is unusually high.
If z <= -2, the value is unusually low.
If z <= -3, the value is very unusually low. 

List

68 76 56 49 52 43 40 40 38 37 33 32 25 18 17 83 65 62 52 61 58 51 45 45 39 38 30 29 21 16 

Average = 43.97
Standard deviation = 16.99

Round z-score to the nearest hundredth.

z(high value) = ______________

Is this any kind of outlier, and of so, which one? ____________


z(low value) = ______________
Is this any kind of outlier, and of so, which one? ____________

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If you are looking for more information on look-up tables, follow this link to a previous post.

Here is a link to some practice problems for raw scores to z-scores to proportions and vice versa.