Scales of measurement are important because a) they influence the kinds of stati
ID: 3149372 • Letter: S
Question
Scales of measurement are important because
a) they influence the kinds of statistical tests we will use in at least a crude way.
b) they reflect the kinds of statements we may make about relationships between
points on the scale.
c) they limit the kinds of conclusions we can draw from a study.
d) all of the above
2.2 Which scale really isn’t much of a scale at all?
a) nominal
b) ordinal
c) interval
d) ratio
2.3 The major difference between an interval and a ratio scale is that
a) with an interval scale you know which values represent more of the quantity.
b) with an interval scale you can speak meaningfully about a score of 0.
c) with a ratio scale you can speak meaningfully about a score of 0.
d) both scales carry the same level of information
2.4 When we are concerned about the measurement scale, we are concerned about
a) the numbers we have collected.
b) the underlying concept which we are trying to measure.
c) the interpretation we can give to our resulting statistics.
d) both the underlying concept and our interpretation of them.
2.5 Evans et al. (1998) recorded adrenaline levels of children who lived near a newly
opened airport to see if the presence of the airport increased stress levels in
children. (Increased stress would be associated with increases in adrenaline
levels.) In this study we would most likely view adrenaline as
a) a ratio measurement of stress.
b) a nominal measure of stress.
c) somewhere between an ordinal and an interval measure of stress.
d) an absolute measure of stress.
2.6 In the study of children living near an airport, we first need to be concerned about
a) the underlying scale of adrenaline scores.
b) the relationship between numerical scores on adrenaline and underlying stress.
c) whether adrenaline increases over time in a continuous fashion..
d) the number of children who showed high adrenaline scores.
2.7 If we are comparing the adrenaline scores of children who live near an airport
with those who live away from an airport, the dependent variable is
a) location.
b) adrenaline.
c) stress.
d) distance from the airport.
2.8 In the preceding question the independent variable is
a) stress.
b) adrenaline.
c) location.
d) the number of children treated for sleep disturbance.
2.9 When we use paw-lick latency as a measure of temperature sensitivity, latency is
a) an independent variable.
b) a categorical variable.
c) a continuous variable.
d) a discrete variable.
2.10 If we want to obtain a random sample of people to interview, we could best do so
by
a) drawing random numbers from a table and linking a number to a person.
b) taking every 10th name out of the telephone book.
c) knocking on doors and interview whoever answers.
d) asking for volunteers.
2.11 Which of the following is least likely to be an example of an independent
variable?
a) gender
b) age
c) treatment condition
d) test score
2.12 Which of the following is a discrete variable?
a) gender
b) age
c) height
d) depression score
2.13 The Greek letter is a symbol for
a) multiplication.
b) suppression.
c) the square root.
d) summation.
Explanation / Answer
question answer 2.1 d) all of the above 2.2 c) nominal 2.3 c) with a ratio scale you can speak meaningfully about a score of 0. 2.4 d) both the underlying concept and our interpretation of them. 2.5 c) somewhere between an ordinal and an interval measure of stress 2.6 d) the number of children who showed high adrenaline scores. 2.7 b) adrenaline. 2.8 c) location. 2.9 b)caterogical 2.1 a) drawing random number from a table and linking to a person 2.11 a)gender 2.12 a) gender 2.13 d) summation