1. pencil, red pen, highlighter, notebook, graphing calculator
5/2/13
Have out:
On a test, the average score was 78 and the standard deviation was 6. Label the normal curve with the scores (and include z–scores). Answer the following:
Bellwork:
a) What percent of scores are less than 90?
b) What percent of scores are between 66 and 84?
c) What percent of scores are higher than 60?
d) Tomiko scored a 70 on the test. What is her z–score? Is she an outlier?
e) Yasashiku has a z–score of What is his raw score? Round your answer to the nearest whole number.
total:

2. a) What percent of scores are less than 90?
50%
+ 47.5%
= 97.5% +2 +1
50%
47.5% 60 66 72 78 84 90 96 –3 –2 –1 1 2 3
z–score
+1 labeled scores
+1 labeled z–scores

3. b) What percent of scores are between 66 and 84?
47.5%
+ 34%
= 81.5% +2 +1
47.5%
34% 60 66 72 78 84 90 96 –3 –2 –1 1 2 3
z–score

4. c) What percent of scores are higher than 60?
49.855%
+ 50%
= 99.85% +2 +1
50%
49.85% 60 66 72 78 84 90 96 –3 –2 –1 1 2 3
z–score

5. d) Tomiko scored a 70 on the test. What is her z–score
d) Tomiko scored a 70 on the test. What is her z–score? Is she an outlier? +1 +1
No, she is not an outlier. +1
e) Yasashiku has a z–score of What is his raw score? Round your answer to the nearest whole number. +1
total: +1 60 66 72 78 84 90 96 –3 –2 –1 1 2 3
z–score

6. It’s time for the study team test!
Move into your group and work on the test.
Due tomorrow!

7. It’s time to grade the QUIZ!!!
Clear your desk except for a red pen.