Determine which of the following statements is descriptive in nature and which is inferential
Assignment Week 1
1. Determine which of the following statements is descriptive in nature and which is inferential. Refer to the data below in How Old is My Fish?
How Old is My Fish |
|||||||
Average age by length of largemouth bass in new York State |
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Length |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
Age |
2 |
3 |
3 |
4 |
4 |
5 |
5 |
a. All 9-inch largemouth bass in New York State are an average of 3 years old.
b. Of the largemouth bass used in the sample to make up th NYS DEC Freshwater Fishing Guide, the average age of 9-inch largemouth bass was 3 years.
In your answer also describe and explain the difference between descriptive statistics and inferential statistics.
Question 2
2. Since 1981, Fortune magazine has been tracking what they judge to be the “best 100 companies to work for.” The companies must be at least ten years old and employ no less than 500 people. Below are the top 25 from the list compiled in 1998, together with each company’s percentage of females, percentage of job growth over a 2 year span, and number of hours of professional training required each year by the employer.
Company Name |
Women (%) |
Job Growth (%) |
Training (hr/yr) |
Southwest Airlines |
55 |
26 |
15 |
Kingston Technology |
48 |
54 |
100 |
SAS Institute |
53 |
34 |
32 |
FEL-Pro |
36 |
10 |
60 |
TDIndustries |
10 |
31 |
40 |
MBNA |
58 |
48 |
48 |
W.L.Gore |
43 |
26 |
27 |
Microsoft |
29 |
22 |
8 |
Merck |
52 |
24 |
40 |
Hewlett-Packard |
37 |
10 |
0 |
Synovus Financial |
65 |
23 |
13 |
Goldman Sachs |
40 |
13 |
20 |
MOOG |
19 |
17 |
25 |
DeLoitte&Touche |
45 |
23 |
70 |
Corning |
38 |
9 |
80 |
Wegmans Food Products |
54 |
3 |
30 |
Harley-Davidson |
22 |
15 |
50 |
Federal Express |
32 |
11 |
40 |
Proctor & Gamble |
40 |
1 |
25 |
Peoplesoft |
44 |
122 |
0 |
First Tennessee Bank |
70 |
1 |
60 |
J.M. Smucker |
48 |
1 |
24 |
Granite Rock |
17 |
29 |
43 |
Petagonia |
52 |
5 |
62 |
Cisco Systems |
25 |
189 |
80 |
a. Find the mean, range, variance, and standard deviation for each of the three variables shown in the list. Present your results in a table.
b. Using your results from (a), compare the distributions for job growth percentage and percentage of women employed. What can you conclude?
Grading Criteria Assignments |
Maximum Points |
Meets or exceeds established assignment criteria |
40 |
Demonstrates an understanding of lesson concepts |
20 |
Clearly present well-reasoned ideas and concepts |
30 |
Mechanics, punctuation, sentence structure, spelling that affects clarity, and citation of sources as needed |
10 |
Total |
100 |
Discussion Question:
Write a 75-150 word essay/explanation on why you should study statistics. In your answer define the word statistics and discuss how you will use statistics in your career field.