01 Scientific method

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Surname *

Name *

Put the following steps of scientific method in the correct order. *

10 points

1. formulating a hypothesis 2. making observations 3. designing a controlled experiment to test the hypothesis 4. collecting and interpreting data 5. forming a conclusion 6. comparing the conclusion with existing knowledge 7. reporting and publishing the results 8. developing theories and principles

1. formulating a hypothesis 2. making observations 3. collecting and interpreting data 4. designing a controlled experiment to test the hypothesis 5. forming a conclusion 6. comparing the conclusion with existing knowledge 7. reporting and publishing the results 8. developing theories and principles

1. making observations 2. formulating a hypothesis 3. designing a controlled experiment to test the hypothesis 4. collecting and interpreting data 5. forming a conclusion 6. comparing the conclusion with existing knowledge 7. reporting and publishing the results 8. developing theories and principles

The controlled experiment... (match proper answers) *

10 points

is when the control group does not go through all the steps of an experiment except the one being tested

is provided to be sure that the results are due to the experimental variable not to some unknown factor

is when all conditions are kept constant except the one being tested

carrying out replicates (repeating the procedures)

Required

Double-blind testing means: (match proper answers) *

10 points

is provided to be sure that the results are due to the experimental variable not to some unknown factor

avoiding bias in an experiment

preventing differences affecting the validity of the result (so, having the control receiving a placebo)

neither the students nor the researcher knows who is in the experimental group and in control group (taking placebo)

Required

Freedom from bias can be achieved by a number of methods including: (match proper answers) *

10 points

the use of a large number of samples

random selection

carrying out repliates

human error and accidental discovery

neither the students nor the researcher knows who is in the experimental group and in control group (taking placebo)

double-blind testing

Required

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