Bio Unit 3 Sem 1

Question 1

Qualitative Data

Answer 1

Descriptive data

Question 2

Quantitative Data

Answer 2

Collected data and expressed numerically

Question 3

Accuracy

Answer 3

How close a measured value is to its true value

Question 4

Precision

Answer 4

How closely a set of measured values are with each other

Question 5

Repeatability

Answer 5

The variation in successive measurements of the same variable taken under the same conditions

Question 6

Reproducibility

Answer 6

The variation in successive measurements of the same variable taken under changed conditions

Question 7

Validity

Answer 7

How valid an experiment is - if it investigates what it sets out and/or claims to investigate

Question 8

Types of errors

Answer 8

Personal - Mistakes/miscalc made by the experimenter

Systematic - Errors caused by faulty equipment or calibration affecting accuracy

Random - Errors caused by unpredictable variations - results in a spread of readings

Question 9

Outliers

Answer 9

Data points that differ significantly from other observations

Question 10

Experimental group

Answer 10

Group/s to which the IV/treatment is applied

Question 11

Hypothesis

Answer 11

A testable statement that describes the relation between IV and DV