# Australian Bureau of Statistics

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 Education Services

 Steps In Running A Survey

Step 1: Planning a survey

Step 2: Collecting data
Step 3: Organising data

After you have collected the data, it needs to be organised so that it is useful and ready to display.

Frequency tables
A useful way to record raw data is a tally table or frequency table.
A frequency table counts the number of times – or frequency – a value occurs in the data. For example, twenty people are asked "How many TVs do you have in your household?" If 2 households have 1 TV, the frequency of households with 1 TV is 2.

Frequency tables with class intervals
When a variable has a large spread, the values can be grouped together to make the data easier to manage and present.
For example, if you asked students how much time it takes them to get to school each day, their responses may vary considerably. In this case, you can group the responses together in 5 minute intervals. These intervals are called class intervals. All class intervals should have an equal range. Class intervals are usually in groups of 5, 10, 20, 50 etc.

 NUMBER OF TVs TALLY FREQUENCY (f) 0 l l l l 4 1 l l 2 2 l l l l l 6 3 l l l l l l l 8
Figure 1: Frequency table of number of TVs per household

 TIME TAKEN TO GET TO SCHOOL (min) TALLY FREQUENCY (f) 1 - 5 l l l l l l 7 6 - 10 l l l l l l l l 9 11 - 15 l l l l l l l l 9 16 - 20 1 1
Figure 2: Example of a frequency table showing five minute class intervals

Step 4: Displaying information
Step 5: Analysing the data