Statistics

WALT calculate the mean, median, mode and range for a set of data.

TASK Elly and Troy want to find out once and for all:

- which Activity Group has the overall best score, (mean)
- which Activity Group has the highest middle number, (median)
- what score was the most common, (mode)
- which activity group has the highest range. (range)

In everyday life people collect data to look for trends and make decisions. In order to analyse the information, we need to understand the different ways to lOOK at the data.

Success Criteria you will know you are successful when:

- calculate the mean by adding up all the data (9 + 4 + 4 + 5 + 8 = 30) then divide the total by how many numbers there were (9, 4, 4, 5, 8 = 5 numbers so 30 ÷ 5 = 6).
- calculate the median by ordering all numbers from smallest to biggest then selecting the middle number (4, 4, 5, 8, 9 = 5 is the middle number). If there are 6 numbers e.g. 4, 4, 5, 6, 8, 9, then the median is halfway = 5.5.
- calculate the mode by identifying which number occurs most often (4, 4, 5, 8, 9 = 4 because there are two of them). You can have more than one mode.
- calculate the range by finding the difference between the highest and lowest numbers (9 - 4 = 5).

- My score was 0, 16, 22.

- Now I had those scores, so that = 38

- Now I dived 38 and 3 because I had 3 goes and that = 12.5

- Range: My range is 22 because you had to had up the lost-est score and the high-est score so that = 22.

Range: My lowest score was 0 and my high-est was 22.

- Jade got on the piece of paper 21, 24, 29.

- The number that had up all together was 74

Cam got on the piece of paper 22, 40, 40.

The number that had up all together was 102

Now I have dived that up, so it = 24.5

Baliey got on the piece of paper 28, 33, 38

The number that had up all together was 98

Now I have dived that up, so it = 32.5

Harrison got on the piece of paper 29, 32, 39.

The number the had up all together was 100

Now I have dived that up, so it = 33.2

Iggy got on the piece of paper 38
, 42, 43.

The number that had up all together was 123

Now I have dived that up, so it =

Mode: Cam got 40 two times.

It looks like you have got this right after all the emails back and forth Soph, it shows that you really persevered on this task and didn't give up until you got it sorted.

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