Maths Biology 💕💪💕 Flashcards
Random sampling….
Avoids BIAS
✨✨✨
Means a statistical test can be used
Large sample size….
Gives REPRESENTATIVE data
✨✨✨
Means a statistical test can be used
Ratios / percentages / PER ect…
Enables comparison
✨✨✨
When stating masses are different / different sizes / different populations
Reliable results…..
Repeats!!!!
Show anomalies
&
Enable a MEAN average to be calculated
Control….
Enables you to see if the results are due to what is being investigated
✨✨✨
And not due to a placebo effect / psychological effect
Control groups….
Treated exactly the same as the experimental group
✨✨✨
But given a placebo
Independent variable ?
The thing you are changing 💕
Dependent variable ?
Thing being measured 🙌
Control variable
Stays the same
Reliability
The likeliness of someone else repeating the experiment and getting the same answer, so there is no variation in the replication of data!!!
Accuracy ?
How close your answer is to the true value
I.e. That there are no errors or anomalous results
Precision
Relates to the equipment
Validity??
Takes into account reliability, accuracy, and precision ….. And decides how correct your results are the investigation taken out on the correct assumptions and were results drawn logically
Discrete / discontinuous data??
Is counted data
✨✨✨
Can only take certain values (eg no. Students you can’t take half a student)
Continuous data??
Is measured
✨✨✨
Can take any value within a range (eg 1.5cm)
