Definitions and Examples

Question 1

What is the definition of validity in scientific research?

Answer 1

Validity refers to the extent to which a test or experiment measures what it is intended to measure.

Question 2

True or False: A valid test can produce unreliable results.

Answer 2

True.

Question 3

Fill in the blank: A test is considered reliable if it produces ______ results under consistent conditions.

Answer 3

consistent

Question 4

What does it mean for a test to be reliable?

Answer 4

A reliable test yields the same results upon repeated trials under the same conditions.

Question 5

Choose the correct term: A test that measures what it claims to measure is called ______.

Answer 5

valid

Question 6

What is a fair test?

Answer 6

A fair test is an experiment where only one variable is changed at a time while all other conditions are kept the same.

Question 7

True or False: A fair test can have multiple variables changed simultaneously.

Answer 7

False.

Question 8

What is the purpose of having a control group in an experiment?

Answer 8

To provide a baseline for comparison against the experimental group.

Question 9

Multiple choice: Which of the following is NOT a factor that affects validity? A) Measurement error B) Sample size C) Random assignment D) Time of day

Answer 9

D) Time of day

Question 10

Fill in the blank: In a fair test, the ______ variable is the one that is manipulated.

Answer 10

independent

Question 11

What is an example of a reliable measurement?

Answer 11

A scale that gives the same weight reading for the same object every time it is weighed.

Question 12

True or False: A reliable test can be invalid if it does not measure the intended concept.

Answer 12

True.

Question 13

What is the difference between qualitative and quantitative validity?

Answer 13

Qualitative validity refers to the quality of the measurement, while quantitative validity refers to the numerical accuracy and precision.

Question 14

Choose the correct term: The variable that is measured in an experiment is called the ______ variable.

Answer 14

dependent

Question 15

What is the significance of random assignment in experiments?

Answer 15

It helps to eliminate bias and ensures that each participant has an equal chance of being assigned to any group.

Question 16

Multiple choice: Which aspect does NOT contribute to a fair test? A) Keeping variables constant B) Changing multiple variables C) Random assignment D) Using a control group

Answer 16

B) Changing multiple variables

Question 17

Fill in the blank: A test’s ______ is determined by how well it reflects the concept it is supposed to measure.

Answer 17

validity

Question 18

What is the role of replication in scientific research?

Answer 18

Replication helps to confirm the reliability and validity of the results by repeating the study under the same conditions.

Question 19

True or False: Reliability and validity are the same concepts.

Answer 19

False.

Question 20

What is an example of a variable that should be controlled in an experiment?

Answer 20

Temperature, light conditions, or type of material used.

Question 21

Choose the correct term: The consistency of a test’s results over time is known as ______ reliability.

Answer 21

test-retest

Question 22

What does it mean if a test has high construct validity?

Answer 22

It means that the test accurately measures the theoretical construct it is intended to assess.

Question 23

Fill in the blank: A fair test allows for a clear ______ between the independent and dependent variables.

Answer 23

comparison

Question 24

What is an example of a situation where validity might be questioned?

Answer 24

When a survey designed to measure intelligence uses ambiguous questions.

Question 25

True or False: A test can be reliable but not valid.

Answer 25

True.

Question 26

What should be done to ensure that a test is both reliable and valid?

Answer 26

Use standardized procedures, control variables, and ensure appropriate measurement tools.

Question 27

Multiple choice: What is the main goal of a fair test? A) To achieve the fastest results B) To isolate the effect of the independent variable C) To confuse the participants D) To make the experiment more complicated

Answer 27

B) To isolate the effect of the independent variable

Question 28

Fill in the blank: The ______ of a test refers to its ability to produce consistent results.

Answer 28

reliability

Question 29

What is the importance of defining key terms in an experiment?

Answer 29

It ensures clarity and consistency in understanding the research process and results.

Question 30

How do you write a conclusion?

Answer 30

The aim... The hypothesis... The data...

Question 31

How do you write a trend?

Answer 31

The relationship is linear because as _______ increases/decreases, _______ also increases/decreases.

Question 32

How would you write a conclusion on the effect of sunlight on plant growth?

Answer 32

The aim of this experiment was to investigate the effect of light on plant growth The hypothesis was that if the plants were exposed to more sunlight, then the plants would experience more growth, The data collected showed a linear trend as when the amount of sunlight was increased, the plant growth also increased.

Question 33

How would you write whether the experiment on the effect of sunlight on plant growth is reliable?

Answer 33

(Yes/No), The experiment (is/is not) reliable because there were (more/less) than _____ trials (has to be more than 3 trials) with (consistent/inconsistent) results which makes the experiment (reliable/unreliable).

Question 34

How would you write whether the experiment on the effect of sunlight on plant growth is valid?

Answer 34

(Yes/No), the experiment is (valid/not valid) because the method is (appropriate/not appropriate) and (does/does not) support the aim.

Question 35

How would you write whether the experiment on the effect of sunlight on plant growth is a fair test?

Answer 35

(Yes/No), The experiment (is/is not) a fair test as (only one variable is changed, the Independent variable/other variables have been changed too that aren't the Independent variable). This (does/does not) allow for 1 variable to be measured while all other variables are controlled, (which does not ensure/ensuring) that other variables have (not) affected the end results of the test.