Explain difference between descriptive statistics

Assignment Help Engineering Mathematics

Reference no: EM13823315

Question 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
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:

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?

Reference no: EM13823315

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