Governments, businesses and researchers gather statistics so they can draw conclusions and make decisions about specific issues. So if we're using statistics to make these important decisions, it's important to make sure that we're really investigating that issue.
That's why it's important to make sure we ask the right questions when we are collecting data. We need specific research questions that will give us specific answers to the questions we are trying to answer.
We also need to understand what graphs and statistical information are trying to tell us so we can draw conclusions based on information that is presented to us.
A statistical question must have all of the following:
What statistical attributes would need to be considered if you were trying to investigate how many hours of homework your teachers set each week?
What statistical attribute is being compared in the bar graph?
Which three of the following are statistical questions?
Plan and conduct investigations using the statistical enquiry cycle: A justifying the variables and measures used B managing sources of variation, including through the use of random sampling C identifying and communicating features in context (trends, relationships between variables, and differences within and between distributions), using multiple displays D making informal inferences about populations from sample data E justifying findings, using displays and measures.
Investigate bivariate numerical data using the statistical enquiry cycle