Collecting Data
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| If I collect information about the age of Open University students from the internet, is my data primary or secondary? | Secondary
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| What type of data are the answers to the question "What colour car do you drive?", qualitative or quantitative? | Qualitative
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| Which of the following data are discrete? a) Heights of basketball players b) The length of rat intestines c) Time taken to run 100m | None - they are all continuous data
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| What type of data are the number of pages in a sample of student textbooks? Qualitative, quantitative, discrete, or continuous? | Quantitative discrete
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| List out some key words associated with discrete data. | Number of, how many of, count
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| List out some key words associated with continuous data. | Measure, units of measurement e.g cm, m, kg, sec, ml, degrees
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| What is a sample and why would I take one? | Part of the whole population with the sa?me features, taken to save time and money
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| List 5 methods of collecting data. | Face to face survey, post/e-mail survey, observation, controlled experiment, data logging
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| List 2 things that are wrong with the following question in a survey: "How often do you play sport?: a) Very often b) Often c) Never " | It does not specify a time frame e.g. in a week, it does not quantify very often and often (e.g. every day?, 5 times a week?)
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| If in a survey question I offer a choice of controlled answers, list 2 things I must avoid in range of options I offer. | Gaps (e.g. 3-5 and then 9 -11, missing 6-8) and overlaps (e.g. 3-5, 5-7: what do I tick for 5?)
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| What is 'raw' data? | Data collected but not organised in any way
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| What is a tally chart? | The simplest way to organise data by representing 5 with 4 strokes and a line through them
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| List 2 columns In a frequency table | Type of data (e.g colour or size) and frequency (how many of each)
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| What is a two way table? | They show more than one characteristic of the data at one time e.g. boys and girls, those who like sport and those who don't
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| In a survey 50 children were asked if they liked chocolate, 15 boys didn't like chocolate, a total of 26 girls were asked, how many boys liked chocolate? | 9
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
sandy archer
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