Exam 7: Measurement: Scaling,reliability,validity

A nominal scale is always dichotomous.

The difference between an ordinal and a ratio scale is that a ratio scale has an arbitrary zero point.

Julia stands on a pair of scales three times in a row.The first time she weighs 69 kilo,the second time 69 kilo,and the third time 69 kilo.Her real weight is 51 kilo.What is the matter with the scales?

A characteristic of a ratio scale is that it has an absolute zero point.

What is the measurement level of income,measured in the following way: "What is your annual gross income?" < €15.000 €20)000 - €30.000 €30)000 - €45.000 > € 45.000

"Rank the following soft-drinks that you would like to buy in the order of preference,assigning 1 for the most preferred choice and 5 for the least preferred. Coca Cola Pepsi Dr Pepper Raak Herschi " This is an example of:

"As the calibration or fine-tuning of a scale increases in sophistication,so does the power of the scale".What is therefore the most powerful scale?

Interval and ratio variables are also called metric variables.

Formally,a Likert scale is _______?

Convergent validity is established when the scores obtained with two different instruments measuring the same concept are highly correlated.

The scale type of a moderating variable is nominal.

Predictive validity indicates the ability of the measuring instrument to differentiate among individuals with reference to a future criterion.

About a scale (set of questions)it can be said that the indicates how well the results obtained from the use of the measure fit the theories around which the test is designed.