solution

Data was collected on the number of television sets in a household and it was found that the mean was 2.5 and the standard deviation was 1. Based on the sample data, what is the standardized value corresponding to 3.5 televisions?

	0.91
	1
	1.82
	-2
	-1

2. At the end of the school term, students are asked to rate the course and instructor by indicating on a scale of 1-5 how well they liked the course. The data generated from this question are examples of ordinal data.

	True
	False

3. A sample data set from children regarding to their favorite restaurant is shown below:

McDonalds	Luppi’s	Mellow Mushroom
McDonalds	McDonalds	McDonalds
Pizza Hut	Taco Bell	McDonalds
Mellow Mushroom	McDonalds	Pizza Hut
McDonalds	Friday’s	McDonalds

What is the relative frequency for McDonalds?

	6
	0.54
	8
	0.4
	0.27

4. Given the following information:

Standard deviation =18

Coefficient of variation =54%

The mean would then be:

	28.12
	cannot be determined,
	0.54
	18
	33.33