Explain Scale of measurements.
1. Explain what is the level of measurement for the variable Number of Presidential Elections in Which Respondent Voted in Entire Life measured by the number the respondent reports?
1) Nominal
2) Ordinal
3) Interval
4) Ratio
2. Explain what is the level of measurement for the variable, ‘political ideology' measured as ‘Very Conservative', ‘Conservative', ‘Moderate', ‘Liberal' and ‘Very Liberal'?
1) Nominal
2) Ordinal
3) Interval
4) Ratio
3. Explain what is level of measurement for the variable, political party affiliation, ‘with values Democrat', ‘Independent', ‘Republican' or ‘green'?
1) Nominal
2) Ordinal
3) Interval
4) Ratio
4. Explain what is the level of measurement for the variable ‘Political Ideology Scale', measured on a scale of 6-24 and where 6=Very Conservative and 24=Very Liberal?
1) Nominal
2) Ordinal
3) Interval
4) Ratio
5. Explain a study was conducted to investigate the effect of a coal-fire generating plant upon the water quality of a river. As part of an environmental influence study, fish were captured, tagged and released. The subsequent information was recorded for each fish:
Sex (0=female, 1=male),
Length (cm),
Maturation (0=young, 1=adult),
Weight (g).
The scales of these variables are:
1) nominal, ratio, nominal, ratio
2) nominal, interval, ordinal, ratio
3) nominal, ratio, ordinal, ratio
4) ordinal, ratio, nominal, ratio
5) ordinal, interval, ordinal, ratio
6. As part of a study to examine the effects of stubble burning, the subsequent variables were measured at several sites around Winnipeg-
pH of soil (to one decimal place, e.g., 6.3);
crop grown (0=wheat, 1=barley, 2=oats, 3=other);
amount of stubble (0=light, 1=medium, 2=heavy);
date of final harvesting (e.g., 10 Oct 92).
The scales of these variables are:
1) interval, ordinal, ratio, ratio
2) interval, nominal, nominal, interval
3) interval, nominal, ordinal, interval
4) ratio, ordinal, ordinal, ratio
5) interval, nominal, ordinal, ratio
7. A study was conducted to compute the effect of smoking upon the birth weight of a baby. The subsequent variables were measured for each women in the study-
Smoking status (yes, no),
Baby birth weight (g),
APGAR score,
Birth date.
The scales of these variables are:
1) nominal, ratio, ratio, ratio
2) ordinal, ratio, interval, interval
3) nominal, ratio, ordinal, ratio
4) nominal, ratio, ordinal, interval
5) ordinal, ratio, ordinal, ordinal
8. An experiment was done upon rats to investigate the effect of ingesting Alar (a chemical sprayed on apple trees to keep fruit from dropping before ripe) upon subsequent cancer rates. The subsequent variables were measured:
gender (0=female, 1=male);
weight (g);
dose of Alar (nil, low, high);
number of tumours
The usual weight of a rat is about 800 g and the weights were rounded to the nearest gram. The number of tumours is around 10. Which of the subsequent is false?
1) Gender is nominal scale; dose is ordinal scale
2) Gender is discrete; weight is continuous
3) Number of tumors is discrete and is interval scale
4) Dose is ordinal scale and discrete
5) Weight is ratio scale; and number of tumors is discrete.
9. A random illustration of 500 households in Vancouver was selected and several variables are recorded for each household. Which of the subsequent is not correct?
1) Household total income is a ratio scaled variable.
2) Household income (which averages about $35,000) and was rounded to the nearest $100 can be treated as a continuous variable even though it is "discrete".
3) Socioeconomic status was coded as 1=low income, 2=middle income, 3=high income and is an interval scaled variable.
4) The primary language used at home is a nominal scaled variable.
5) The number of persons in the household is a discrete variable.
10. Describe- The incomes of a group of 50 loan applicants are obtained and which level of measurement is income?
1) Nominal
2) Ordinal
3) Interval
4) Ratio
5) None of the above