Statistics for Life Sciences

Question 1

give 2 examples of factors as variables

Answer 1

sex, diet (must have distinct categories)

Question 2

give 2 examples of covariates

Answer 2

rainfall (mm), concentration (mol)

Question 3

name the 2 types of variable

Answer 3

covariate or factor

Question 4

what is continuous data

Answer 4

measured data that can have infinit values within a possible range

Question 5

what is discrete data

Answer 5

observations can only exist at limited values

Question 6

what is nominal data

Answer 6

unordered descriptions, often qualitative

Question 7

what is ordinal data

Answer 7

data with a sequential scale

Question 8

if a variable is normally distributed is the mean or median used

Answer 8

mean

Question 9

define the range within data

Answer 9

the spread, or distance, between the lowest and highest values of a variable

Question 10

why is the interquartile range used

Answer 10

since it is less susceptible to outliers since it keeps 50% of observations around the median

Question 11

what are the two types of statistics

Answer 11

summary or inference