Module 1 Lesson 1

Question 1

Mean

Answer 1

the average

Question 2

95% Confidence interval

Answer 2

twice the standard error of the mean

Question 3

median

Answer 3

the middle value of a group of values

Question 4

null hypothesis

Answer 4

states there is no difference between two or more sets of data

Question 5

hypothesis

Answer 5

a proposed explanation for a problem

Question 6

data

Answer 6

any information collected (and recorded) during scientific investigation

Question 7

error bars

Answer 7

used in graphs to quantify the variability of data

Question 8

quantitative data

Answer 8

data measured or identified on a numerical scale

Question 9

Standard Error of the Mean (SEM)

Answer 9

the measure of uncertainty in the calculation of the mean; estimates how close a sample mean is to the population mean

Question 10

independent variable

Answer 10

the experimental factor that is manipulated; the variable whose effect is being studied

Question 11

constant

Answer 11

factors in an experiment that stay the same

Question 12

experiment

Answer 12

planned procedure to test a hypothesis

Question 13

mode

Answer 13

the most frequent value in a group of values