Question

Q 6 Identify the type of primary scale of measurement being used
in each of the following cases. Please give a rationale (in one
sentence) for each case.

(a) I like to solve crossword puzzles

Disagree Agree

1 2 3 4 5

(b) How old are you?

(c) Please rank the following activities in terms of your
preference by assigning ranks 1 (most preferred) to 5 (least
preferred).

i. Reading magazines

ii. Watching television

iii. Dating

iv. Shopping

v. Eating out

(d) What is your Aadhar no.?

(e) On an average weekday, how much time do you spend doing your
homework?

i. Less than 15 min

ii. 15 to 30 min

iii. 31 to 60 min

iv. 61 to 120 min

v. More than 120 min

(f) How much money did you spend last month on entertainment?

(g) The Richter scale measures the size of an earthquake. The scale
is based on the amplitude in the

read out of a seismograph.

Richter Amplitude

1 10

2 100

3 1000

7. A manufacturer would like to survey users to determine the
demand potential for a new power press.

The new press has a capacity of 500 tons and costs $225,000. It is
used for forming products from

lightweight and heavyweight steel and can be used by automobile,
construction equipment, and

major appliance manufacturers.

(a) Identify the population and sampling frame that could be used.

(b) Describe how a simple random sample can be drawn using the
identified sampling frame.

(c) Could a stratified sample be used? If so, how?

(d) Could a cluster sample be used? If so, how?

(e) Which sampling technique would you recommend? Why?

8. What do you mean by Reliability and Validity of scale?
Explain with the help of true score model.

Also, explain the relationship between Reliability and Validity of
scales in terms of errors in the true

score model?

(5+10+5 marks)

Answer #1

(a) I like to solve crossword puzzles

Disagree Agree

1 2 3 4 5

Ans: **Ordinal Scale
Eg: Likert Scale**

Ordinal scales are typically measures of non-numeric concepts like satisfaction, happiness, discomfort, etc.

“Ordinal” is easy to remember because is sounds like “order” and
that’s the key to remember with “ordinal scales”–it is the
*order* that matters, but that’s all you really get from
these.

b). How old are you?

**Ratio Scale**

Ratio scales are the ultimate nirvana when it comes to data
measurement scales because they tell us about the order, they tell
us the exact value between units, AND they also have an absolute
zero–which allows for a wide range of both descriptive and
inferential statistics to be applied. At the risk of repeating
myself, everything above about interval data applies to ratio
scales, plus ratio scales have a clear definition of zero. Good
examples of ratio variables include height, weight, and
duration.Data related to age, income, costs, sales, and market
shares would be best gathered using a ratio scale where any type of
statistical analysis can be performed.

c). Please rank the following activities in terms of your
preference by assigning ranks 1 (most preferred) to 5 (least
preferred).

i. Reading magazines

ii. Watching television

iii. Dating

iv. Shopping

v. Eating out

**Interval Scale**

Also rank Order Scale

d).What is your Aadhar no.?

**Nominal Scale
Giving number to a person doesn't mean anything**

A

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