Randomly selected 50 people from New York City were asked if they use a subway to get to the work place. 40 said “Yes”.

Based on this sample datawas made a statement that for the whole population of New York City residence 80% take subway to get to the work place.

Does this statement represent descriptive or inferential statistics?

Determine the level of measurement for the following variable:

Company Name

Systematic SamplingTechnic was used to select 5 numbers between 1 and 100.

The first selected number was 7.

Complete selection:

Find the Medianfor the following set of data:

11, 22, 5, 7, 30

Find the Median for the following set of data:

25, 20, 8, 10, 28, 16, 22, 15

Calculate Weighted Meanfor the following Data:

Value Weight

20 2

25 4

32 4

40 2

Calculate Weighted Mean for the following Data:

Value Weight

12 2

18 2

20 6

24 5

Find Quartiles for the following set of data:

4, 8, 12, 18, 20, 22, 26, 30

Calculate variancefor the following sample:

(don’t round during calculations)

Value

1 10

2 25

3 28

4 35

Use formula for sample variance, not population variance:

(x1-mean)2+(x2-mean)2+(x3-mean)2+(x4-mean)2 / 3

Calculate standard deviationfor the following sample:

(use formula for sample, not for population when you calculate variance divide by N-1 not by N).

Value

1 22

2 24

3 28

4 31

5 35.

Question 1

Randomly selected 50 people from New York City were asked if they use a subway to get to the work place. 40 said “Yes”.

Based on this sample data was made a statement that for the whole population of New York City residence 80% take subway to get to the work place.

Does this statement represent descriptive or inferential statistics?

Solution:

Correct answer is inferential since sample data is used to make an inference about the entire population.

Question 2

Determine the level of measurement for the following variable:

Company Name

Solution:

Correct answer is Nominal since the variable is the company name.

Question …

The solution provides descriptive statistics for people who use the subway to get to their workplace in New York City.