Question

1. An advertisement for a food product states: "This product has 50% less calories." This is an example of

a) ambiguous averages b) detached statistics c) changing the subject d) faulty survey questions

2. For the claim, "4 out of 5 dentists recommend sonicare" you should consider

a) ambiguous averages b) detached statistics c) changing the subject d) suspect samples

3. Vitamin E is a proven antioxidant and may help in fighting cancer and heart disease.

This claim is an example of

a) implied connection b) detached statistics c) changing the subject d) faulty survey questions

4. Statistics can be misused. It is important to consider many factors when making decisions based on the results of research studies and or surveys.

True or False

5. In a frequency distribution the classes need to

a) have the same frequency b) have a maximum of 10 values c) be mutually exclusive aka no overlaps d) have different widths

6. In a medical study, a researcher wished to estimate the average length of time needed for a particular nurse-in-training to draw a series of blood specimens. A sample of the nurse's work over several months yielded the following times: 10, 6, 5, 14, 6, and 13 (in minutes). Calculate x bar, the sample average

a) 9 min b) 10 min c) none

7.

In a medical study, a researcher wished to estimate the average length of time needed for a particular nurse-in-training to draw a series of blood specimens. A sample of the nurse's work over several months yielded the following times: 10, 6, 5, 14, 6, and 13 (in minutes). This sample has less than 30 observational units, which means the population must be bell-shaped in order to generalize. Let's say we have a random sample, what other factors do we need to consider in this sample?

a) both internal and external validity! Internal Validity means the sample times are accurate. External Validity means the methods and presence of the researcher didn't interfere

b) both internal and external validity! Internal Validity means the methods and presence of the researcher didn't interfere. External Validity means the sample times are accurate

c) both internal and external validity! Internal Validity means that the researcher has been validated internally. External Validity means that the subjects have been validated externally

8. There is a quiz " Are you an introvert or extrovert"

a) The quiz is definitely both reliable and valid b) The quiz is may or may not be reliable but it is valid c)  The quiz is may or may not be valid but it is reliable

Answer 1