Question

In order to collect data on the cars that your classmates drive, you plan on asking them: “What brand of car do you drive?” Justify for full credit.

(a) Which type of measurement scale is your data? (i) Ratio (ii) Nominal (iii) Interval (iv) Ordinal

(b) Which center measures can be used to summarize your data?

(i) Mean

(ii) Median

(iii) Mode

(iv) Variance

Answer 1

a) SOLUTION :

WE USE NOMINAL TYPE OF MEASUREMENT HERE IN THIS CASE . IN THIS CATEGORY , THERE IS NO INHERENT ORDER . SO , WE USE NOMINAL SCALE . IT IS EASY TO SIMULATE . THE BIGGEST REASON IS THAT IN THIS CASE , EACH CATEGORY CAN ONLY BE CONSIDERED AS EQUAL TO THE ORDER .

b) IN THIS CASE , WE HAVE TO FIND OUT “What brand of car do you drive?” . WE USE CENTRAL TENDENCY ( MEAN ) TO SUMMARIZE THE DATA .

BECAUSE , WE ARRANGED THE DATA AS CHOICE OF DRIVING CARS OF CERTAIN CATEGORIES , BY EVALUATING THEIR MEANS , WE EASILY FIND OUT WHAT BRAND OF CAR DO YOU DRIVE .