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Bella S2

Problem solving

QuestionAnswer
How do you increase Reliability Repeat the experiment and calculate an average
How do you increase Validity Ensure that variable are kept constant TTCMVP
Why do you repeat experiments To increase Reliability
Why do you calculate dry mass To eliminate any variation in water content
Why do you calculate average results? To increase Reliability
How do you calculate percentage change? change/original x 100
If you earn £80 in 4 hours what is your average earning per hour? £20 per hour
Should you always include units with numbers? YES
How do you calculate a percentage? portion/total x 100 (POT)
How do you calculate an average? Add up a list of numbers then divide the total by how many numbers there were.
Created by: nscobie
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