Collecting Data – Guess! In this game, students compete in groups of 3 or more. Taking it in turns, students read out the clues on a card and the first student in the group to answer correctly gets a point. If students guess incorrectly they should be out of that round. Delete unwanted cards. The cards are arranged to make it easy to guillotine sets for each group.

Printing To print handouts from slides - Select the slide from the left. Then click: File > Print > ‘Print Current Slide’ To print multiple slides - Click on a section title to highlight all those slides, or press ‘Ctrl’ at the same time as selecting slides to highlight more than one. Then click: File > Print > ‘Print Selection’ To print double-sided handouts - Highlight both slides before using ‘Print Selection’. Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

Guess! ? Collecting Data

Data Experiment Research Data Collection Random Sample Population Primary Data Sample Size Valid Analysis Observation Representative Secondary Data Bias Sample Data Presentation Hypothesis

Research Unbiased. To test a hypothesis. By an individual or group. Using primary or secondary data. Research

Primary data collection. Research. An uncontrolled event. An external event. Primary data collection. Observation

Experiment Research. Possibly a random event. A controlled event. Primary data collection. Experiment

Research on a population. Sampling. Surveying. Research on a population. Data Collection

Data Presentation Clear. Unbiased. Bar charts. Line graphs. Easy to understand. Data Presentation

Hypothesis A starting point for an investigation. A proposed explanation. Something to test. Hypothesis

Measured. Collected. Reported Facts. Statistics. Data

An unfair representation. Intentional. Accidental. Prejudice. An unfair representation. Bias

Representative of the whole population. A portion of the whole. A selection of data. Representative of the whole population. Sample

Random Sample Selection from a population. An equal chance of being selected. Random Sample

A group of objects, people, events, or opinions. Data. A group of objects, people, events, or opinions. Population

Sample Size Dependent on precision. Dependent on resources (money & time). Data. A proportion of the population. Sample Size

Data. First-hand. Collected yourself. Primary Data

Potentially inaccurate. Reported. Published. Second-hand. Data. Secondary Data

Equal in proportions to the total population. Unbiased. Typical. Equal in proportions to the total population. Representative

Valid Ethical. Unbiased. Representative. Correctly researched. Correctly presented. Valid

Analysis After collection. After processing data. Before and after representation. With interpretation of results. Analysis

tom@goteachmaths.co.uk Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths.co.uk