module 1

Question 1

what are numerical variables

Answer 1

quantiative measurements that have magnitude and are associated with a numerical scale

commonly counts, dimensions, angles, rates or %

note numerical variables may be continuous or discrete

Question 2

what are some examples of numerical data

Answer 2

height

weight

of kids

dosages

longevity in years

Question 3

what are categorial variables

Answer 3

where data is a ‘member’ of a category in which qualitative characteristics are measured

not numerical measurements (only in terms of frequency)

Question 4

what are some examples of categorical variables

Answer 4

sex

yes or no answers

favorite colour survey
genotypes

provinces

Question 5

what is discrete data

Answer 5

measurements are collected in counts. values are indivisible

number of limbs
# of offspring
# of flower petals

Question 6

what is continuous data

Answer 6

measurements are collected along a spectrum and all values can be infinitely divided

time
height
weight
age
temp

Question 7

what are the types of categorical data

Answer 7

nominal scale

ordinal scale

Question 8

what is nominal data

Answer 8

data that has no particular order and likely no distinct relationship to one another

independent categories

Question 9

what is ordinal data

Answer 9

data by which can be organized by rank.

values have meaningful order, but the value in between the intervals may vary (finishing first vs second vs third in a race)

Question 10

what are the types of numerical variables

Answer 10

interval scale

ratio scale

Question 11

what is interval scale data

Answer 11

all values or categories have a meaning full order and a set interval value. The zero point is arbitrary () can technically be any value

temperature
time
years (BC and AB)
longitude and lattiutes