Practical investigation skills

Question 1

Identify the dependent and independent variables from a sample investigation

Answer 1

Independent Variable: Manipulated by the researcher. Dependent Variable: Outcome measured in response. Look for what is changed (independent) and what is measured (dependent).

Question 2

Identify controlled variables in a sample investigation

Answer 2

Kept constant Prevent influencing results Examples: Temperature, light, pH, time, humidity.

Question 3

Identify aspects in a method that increase reliability and precision

Answer 3

Consistency Reproducibility Controlled Variables Standardization Calibration Replication Accuracy Data Analysis

Question 4

Produce an appropriate graph from a set of results using GLUDST

Answer 4

To create a graph using GLUDST: Input data Choose graph type Customize labels and axes Analyze and interpret the results

Question 5

Identify limitations and suggest improvements to an investigation

Answer 5

When improving an investigation: Increase sample size Address bias Control confounding variables Improve measurement accuracy Allocate sufficient time Enhance resources