5 Which of the following sampling techniques would probably

5. Which of the following sampling techniques would probably give you bias data? a) convenience sampling method b) systematic sampling method c)random sampling method d) stratified sampling method e)cluster sampling method 6. A researcher wants to find out how much money people are spending on college textbooks. He/she decided to go to the college bookstore and asked the first 50 people how much money they spent. This is an example of? a) stratified sampling b) cluster sampling c) systematic sampling d) random sampling e) convenience sampling 7. If we were to create a box plot, which of the following statement (s) would true A. The median would be located somewhere within the box. B. The median value would be larger than the third quart value (Q3) C. The median would always be centered inthe middle ofthe box. D.The median would indicate where the 50th percentile would be a) A and B b) All of them. c) A and D d) C and D. e) None of them. 8. The area under the standard normal distribution from z 1.20 to z 1.75 is a) 0.8448 b) 0.0750 c) 0.401 d) 0.0829 e) None of the above

Solution

5) Convenience sampling. this is so because it is done according to the convenience of the investigator.

6) e) the reason is same as above.

7) A and D are correct. The median can never be grearter thn the third quartile and it is not always centered.

8) a) use NORM.S.DIST in excel for both these values and then subtract them.