Level of Measurement
NOMINAL 1. Macy keeps a detailed list of the different brands of shoes it sells (eg Doc Marten’s Nike,
Nine West ). What type of data is this?
a. Interval b. Nominal c. ordinal d. ratio
INTERVAL 2. Proficiency in Mathematics scored on a scale of 0 to 100 (The scale is well standardized
and can be thought of as having equal intervals)
INTERVAL 3. The temperature of a patient measured in degrees Fahrenheit
RATIO 4. The birth weight of a premature infant as measured in pounds and ounces
NOMINAL 5. Sex of children is an example of ____________ scale
ORDINAL 6. The number of accidents for each of the 20 busy intersections were recorded. Each
accident was rated as:
1 - minor damage, no injuries
2 - moderate damage, slight injury requiring hospitalization
3 - severe damage and injury
ORDINAL 7. Based on attendance figures a ranking of the top 10 American Idol aspirants were
compiled.
ORDINAL 8. Taken all together, how would you say things are these days, would you say that you are
very happy pretty happy not so happy?
Very happy
Pretty happy
Not too happy
RATIO 9. On the average days, about how many hours do you personally watch television?
RATIO 10. Students were observed on during lunchtime at the cafeteria for 3 months. The number of
students sitting with students of other races was counted for each meal period.
3. The following raw scores represent the age at first marriage of a sample of 25 adults.
18 18 19 19 19 19 20 20 20
21 21 22 22 23 23 24 25 26
26 26 27 27 29 30 31
Compute for the mean, median, and mode.
Solution:
Mean:
Σx =18+18+19+19+19+19+20+20+20+21+21+22+22+23+23
+24+25+26+26+26+27+27+29+30+31 = 575
x= 575/25 = 23; The mean of the age of the sample adults at first marriage is 23 years
old.
Median:
The median of the age of the sample adults at first marriage is 22 years old.
Mode:
The mode of the age of the sample adults at first marriage is 19 years old.