Grade 12 EM Chapter 0

Making reasoned judgments and reaching conclusions based on qualitative and quantitative information is part of the stages of investigation on environmental management

• True

• False

Presenting reasoned explanations for phenomena, patterns, and relationships that you have observed in your data is part of the sequence when conducting an investigation.

• True

• False

__________ identifies the purpose of your investigation and you should have a suitable _____ in mind when planning. 'To investigate the effects of coal mining waste on soil pH' is an example of this.

• aim

• goal

• hypothesis

• none of the choices

______________is a statement on the topic that you are investigating. It is a testable prediction that proposes a relationship between two variables:

• hypothesis

• goal

• aim

• research

____________ is a variable which is not changed by other variables you are measuring e.g. the age of a person

• independent variable

• dependent variable

the __________ variable, which is what you are measuring

• dependent

• independent

In research, the hypothesis is written in two forms. The ________________ states that there is no relationship between the two variables being investigated (one variable does not affect the other). Results are due to chance and are not significant in terms of supporting the aim being investigated.

• null hypothesis

• alternative hypothesis

The _____________ states that there is a relationship between the two variables being investigated (one variable has an effect on the other). The results are not due to chance and they are significant in terms of supporting the aim being investigated.

• alternative hypothesis

• null hypothesis

A hypothesis can be accepted or rejected by testing. This is achieved through data collection and analysis. A good hypothesis should: (more than one answer)

• be a statement not a question

• be a prediction with cause and effect

• state the independent and dependent variables being tested

• be short in length.

There are two types of data. __________ is non-numerical, descriptive data

• Qualitative data

• Quantitative data