Steps to plan an statistical investigation
What are the first two steps to plan your investigation?
1. Posing a question.
2. Choose a data collection method- e.g. Tally
Is categorical or numerical data used for numbers?
Numerical
When looking at a table, what do you do first?
Look at the title, and the Y and X axis.
When posing a question, what 3 things do you need to focus on?
Who, What and When.
List three graphs that could show the responses for this question?
What do year 5 students usually do out of school?
Column graph, Dot Plot, Pictograph
After identifying the headings, what do you do next to find your information?
Look for the correct options on each axis, and find the interval box holding the information.
1. Collecting and recording the data- e.g. questioning.
2. Represent the data- e.g. on graph
1. Survey
2. Observe
3. Research
4. Experiment
What graph can be categorical and numerical?
A Column graph
Do you look at the horizontal or vertical categories first?
Horizontal first, vertical after.
What are the third and fourth key steps to plan your investigation??
1. Collecting and recording the data- e.g. questioning.
2. Represent the data- e.g. on graph
What graph is usually only used for numbers, times and weathers?
A Line graph
True or False-- Options such as animals are on Y axis, and things about the animals are X axis.
True
What is the fifth step, and how would you do it?
Interpret the data, and observe the results.
What graph is only categorical data?
Extra Question---What graph would you interpret this question into?
How much pizza did each person eat?
(a. One slice
(b. Two slices
1. Dot plot
2. Line graph
3. Column graph.