Unit 3 - Investigative Biology (word definitions) Flashcards Preview

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Flashcards in Unit 3 - Investigative Biology (word definitions) Deck (19)
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1
Q

causation

A

when changing the independent variable causes the effect noted in the dependent variable

2
Q

confidence intervals

A

a range within which the actual value should lie

3
Q

correlation

A

when two variables seem to be connected

4
Q

error bars

A

drawn on graphs to show the spread of data around the mean

5
Q

mean

A

this is the arithmetical average. add all the values and divide by the number there are

6
Q

median

A

this is the middle point from the range of values

7
Q

mode

A

this is the most common value in a set of data

8
Q

negative correlation

A

as one variable is increased, the other variable decreases

9
Q

parasite load

A

a measure of the number of parasite found within a host organism

10
Q

placebo

A

a substance which has no therapeutic effect

11
Q

plagiarism

A

copying another person’s work or views and passing these off as one’s own

12
Q

plankton

A

microscopic organisms found living in fresh or salt water

13
Q

positive correlation

A

as one variable increases, the connected variable increases too

14
Q

qualitative data

A

information that is observed and presented as a description

15
Q

quantitative data

A

information that can be measures and is usually presented as a number

16
Q

range

A

this is the set of values that the data falls into, thus smallest value to the biggest value and everything in between

17
Q

selection bias

A

where individuals, groups or data are not selected randomly, therefore failing to provide a representative sample

18
Q

standard deviation (SD)

A

shows how much variation or spread from the average/mean exists

19
Q

summary

A

at the start of the report, where the main aims and findings are described briefly