midterm

Question 1

4 types of biological data

Answer 1

Nominal, ordinal, ratio and interval

Question 2

Nominal variable

Answer 2

simple classification with no order of magnitude

Question 3

ordinal variable

Answer 3

ordered value like small, medium, large

Question 4

ratio variable

Answer 4

measurement with a true zero like length or weight

Question 5

interval scale

Answer 5

measurement without a true zero like temperature

Question 6

discrete data

Answer 6

numerical data that are isolated points on a number line

Question 7

continuous data

Answer 7

set of values that form an interval on a number line like length or weight

Question 8

parameters

Answer 8

characteristics of the population

Question 9

statistics

Answer 9

characteristics of the sample

Question 10

potential issue of mean

Answer 10

an extreme value can significantly impact

Question 11

3 measures of central tendency

Answer 11

mean, median and mode

Question 12

5 measures of dispersion

Answer 12

range, interquartile range, mean deviation, variance and standard deviation

Question 13

histogram

Answer 13

graph using bars to represent continuoous variables

Question 14

bar graph

Answer 14

similar to histogram but for categorical values

Question 15

pie charts

Answer 15

categorical variables

Question 16

line graphs

Answer 16

for continuous variables

Question 17

point estimation

Answer 17

using a single value as a plausible value of a parameter

Question 18

interval estimation

Answer 18

using an entire interval of reasonable values

Question 19

null hypothesis

Answer 19

claim about a population characteristic that is initially assumed to be true

Question 20

alternative hypothesis

Answer 20

competing claim