# I Dont Know Essay

(pg. 4)

1.7 Descriptive or inferential TV Viewing Times. The Nielsen Company collect sand publishes information on the television viewing habits of Americans. Data from a sample of Americans yielded the following estimates of average TV viewing time per month for all Americans 2 years old and older. The times are in hours and minutes (NA, not avail- able). [SOURCE: Nielsen’s Three Screen Report, May 2008]

Answer:

This is an example of a descriptive form of data, because of the summary of the number of

*…show more content…*

Answer:

Experimental, because of the placebo. One group gets the vaccine and the other group gets the placebo. The variable which is changed in one group makes it an experiment.

Task 2:

3.8

I think that the mean would be more appropriate since there is a huge difference gap between the mean ($448.2 thousand) and the median (93.1 thousand), The information provided is just a sample of the population.

3.14:

4,2,0,2,2

a. Mean (4+2+0+2+2)/5=2

b. Median 0,2,2,2,4 = 2 c. Mode The most common number is 2

3.18:

5.8,5.7,5.9,5.7,5.7,5.7,5.6, a. Mean (5.8+5.7+5.9+5.7+5.5+5.7+5.7+5.7+5.6)/9=5.7 b. Median 5.5,5.6,5.7,5.7,5.7,5.8,5.9 = 5.7 c. Mode 5.7 – most common number

Task 3: A simple random sample of Fair Isaac Corporation (FICO) Credit rating scores is listed below:

714,751,664,789,818,779,698,836,753,834,693,802

* Find Range, variance, and standard deviation 1. Range

(664, 693,698,714,751,753,779,789,802,818,834,836) 836 - 664 = 172 2. Variance:

4097.1555555556

3. Standard deviation:

64.009027141143

* Yes, the FICO score is unusual because the standard deviation is 58