Lab-Chapter 1

Question 1

science

Answer 1

a way of knowing about the world

Question 2

scientific method

Answer 2

a systematic approach to inquiry that assumes that the answer to a question can be explained by a phenomena that are observable and measurable.
observation-hypothesis-experiment-data collection-data analysis-conclusions

Question 3

observation

Answer 3

first step in scientific method

Question 4

hypothesis

Answer 4

in science it is an educated guess that is testable

Question 5

experiment

Answer 5

designed to test the hypothesis

Question 6

variable

Answer 6

a characteristic that may or may not influence the outcome of an experiment.

Question 7

independent variable

Answer 7

a variable that is set at the outset of the experiment. It does not change as a result of the experimental procedure.

Question 8

dependent variable

Answer 8

the unknown variable that is going to be measured. It is often expected to change as a result of the experimental procedure

Question 9

confounding variables

Answer 9

are any variable that may affect the variable of interest

Question 10

control value

Answer 10

something in which to compare the values. In the example of body temperature, a “normal” body temp of 37 c is the obvious control value

Question 11

mean

Answer 11

the average of all the data points and is calculated by taking the sum of all the data points and dividing by the number of study subjects.

Question 12

median

Answer 12

the middle value of all the data points

Question 13

standard deviation

Answer 13

a measure of the variability of the individual data points compared to the mean.

Question 14

range

Answer 14

simply the difference between the highest and lowest values and is calculated by subtracting the lowest value from the highest value

Question 15

conclusions

Answer 15

draw conclusions based on the results of the experiment. This requires reviewing the hypothesis in light of the data collected.