Lab-Chapter 1 Flashcards Preview

Fall Semester 2017 > Lab-Chapter 1 > Flashcards

Flashcards in Lab-Chapter 1 Deck (15):
1

science

a way of knowing about the world

2

scientific method

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

3

observation

first step in scientific method

4

hypothesis

in science it is an educated guess that is testable

5

experiment

designed to test the hypothesis

6

variable

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

7

independent variable

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

8

dependent variable

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

9

confounding variables

are any variable that may affect the variable of interest

10

control value

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

11

mean

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.

12

median

the middle value of all the data points

13

standard deviation

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

14

range

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

15

conclusions

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