Sample and Population Descriptive
Statistics

1. The Gallup Organization
contacts 1,426 undergraduates who attend a college and live outside the U.S.
and asks whether or not they had taken a course in a conversational English
during their studies.

-What is the population in the
study?

-What is the sample in the study?

2. Identify the type of
observational study (cross-sectional, retrospective, or prospective) describe
below

-A research company uses a device
to record the viewing habits of about 10,000 households and the data collected
over the next 4 years will be used to determine whether the proportion of
households tuned to a particular educational program decreases.

3) The length of each book is 10
words which is listed below. Find the mean and median than compare results.

Terry 9 2 2 3 3 6 4 5 3 3

David 3 5 2 3 1 3 1 3 3 2

4.) Find the range, variance, and
standard deviation. Is the lowest duration time unusual? Why or why not?

79 93 236 192 160 261 198 376 258
233 388 335 224 241 0

5) Which is relatively better: a
score of 73 on a Psychology test or a score of 56 on a Economics test? Scores
on a psychology test have a mean of 91 and a standard deviation of 9. Scores on
the economics test have a mean of 63 and a standard deviation of 3?