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