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1. for which of...

1. for which of the following situations is it appropriate to use a scatter diagram or scatter plot?

a) presenting two qualitative variables

b) presenting one qualitative and one quantitative variable

c) presenting two quantitative variables

d) all of the above

2. Use the Empirical Rule to find what two values 95% of the data will fall between for a data set with mean 234 and standard deviation of 12.

3. Find P25 for the following data 2 6 3 4 2 1 2 0 1 3

6 3

4. you are given the following frequency distribution for the number of errors 10 students made in a test

errors frequency

0-2 14

3-5 13

6-8 11

9-11 8

12-14 9

find a) mean , b) variance, c) standard deviation.

5. an aptitude test has a mean of 220 and standard deviation of 10. find the corresponding z score for a) a test score of 232 and b) a test score of 212

a) presenting two qualitative variables

b) presenting one qualitative and one quantitative variable

c) presenting two quantitative variables

d) all of the above

2. Use the Empirical Rule to find what two values 95% of the data will fall between for a data set with mean 234 and standard deviation of 12.

3. Find P25 for the following data 2 6 3 4 2 1 2 0 1 3

6 3

4. you are given the following frequency distribution for the number of errors 10 students made in a test

errors frequency

0-2 14

3-5 13

6-8 11

9-11 8

12-14 9

find a) mean , b) variance, c) standard deviation.

5. an aptitude test has a mean of 220 and standard deviation of 10. find the corresponding z score for a) a test score of 232 and b) a test score of 212

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