Wednesday, 9 September 2020

Time | Statistical Investigation

Time is an ongoing sequence of events.

There are three words that start with 'm' they are: mean, median ad mode. The mean (average) is found by adding all of the numbers and dividing that by how many numbers there are. For example: 1+2+3+4+5= 15, 15 ÷ 5 = 3, the mean is 3.

The median is found by organizing the numbers from least to greatest and finding the number in the middle. For example: 1, 2, 3, 4 and 5. The median is 3. If the amount of numbers are even like this: 1, 4, 2 and 3, add them 4 + 2 = 6, then divide by 2, 6 ÷ 2 = 3. The median is also 3.

The mode is found by organizing the numbers from least to greatest, then finding the most popular number. For example: 2, 2, 3 and 4. The most popular number is two and that is the mode.


This investigation shows how long it takes for someone to complete a physical activity. Once the person has completed the activity, they convert their time, find their mean, mode and median. The graph below shows the fastest to slowest time taken to complete the activity.

LI: To investigate units of time.

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