scientific method

Question 1

first step

Answer 1

recognise a problem

Question 2

second step

Answer 2

collecting relevant info

Question 3

third step

Answer 3

make a hypothesis

Question 4

fourth step

Answer 4

test a hypothesis, make prediction

Question 5

fifth step

Answer 5

collect data

Question 6

final step

Answer 6

make conclusion or new question

Question 7

what is the independent variable

Answer 7

change

Question 8

what is the dependent variable

Answer 8

measure

Question 9

controlled variable?

Answer 9

keep same, at least 3

Question 10

hypothesis

Answer 10

link independent to dependent using words like increase or decrease

Question 11

what are the 2 types of data

Answer 11

qualitative and quantitative

Question 12

what is qualitative data

Answer 12

abstract and categorised into types

Question 13

what is quantitative data

Answer 13

data that is grouped into numbers

Question 14

how to evaluate an experiment 3 tests …

Answer 14

1. validity
2. accuracy
3. reliability

Question 15

validity def

Answer 15

how accurately a method measures what it is intended to measure.

Question 16

accuracy def

Answer 16

the closeness of a measured value to a standard or known value.

Question 17

reliability def

Answer 17

how consistently a method measures something. If the same result can be consistently achieved by using the same methods under the same circumstances

Question 18

3 types of error

Answer 18

human, random, systematic

Question 19

human error

Answer 19

due to carelessness or to the limitations of human ability

Question 20

random error

Answer 20

Random error is a chance difference between the observed and true values of something (e.g., a researcher misreading a weighing scale records an incorrect measurement). can be corrected by doing it again

Question 21

systematic error

Answer 21

gives measurements that are consistently different from the true value in nature, often due to limitations of either the instruments or the procedure. cannot be corrected by redoing

Question 22

define ethics

Answer 22

moral principals and values

Question 23

what alters an experiments results

Answer 23

bias, placebo

Question 24

what is blind

Answer 24

mum & celyn

Question 25

what is blind

Answer 25

participant doesnt know

Question 26

what is double blind

Answer 26

participants and conductor dont know