Biology 9700 Practical Notes Upd

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AS Level Biology requires proficiency with the light microscope. Calibration: biology 9700 practical notes

| Question you ask | Data type | Test | Null Hypothesis (H₀) | | :--- | :--- | :--- | :--- | | Is there an association between two variables? | Categorical (e.g., red/white flowers) | | There is no association between [variable A] and [variable B]. | | Is there a difference between two means? | Continuous, normal distribution | Student's t-test | There is no significant difference between the mean of [group 1] and [group 2]. | | Is there a correlation ? | Continuous, paired data | Pearson's correlation | There is no significant correlation between [X] and [Y]. | | Is there a difference (non-normal data)? | Continuous, skewed data | Mann-Whitney U | There is no significant difference between the medians. | * AS Level Biology requires proficiency with the