Monday, 24 March 2014

Stats sharp shooting

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).

Air rifle Data:44,41,33

 My difference in range is 44 and 33

My median number is 41

My mean is about 39

My groups mean number is almost 36

My groups median is 32

My groups range is 7 and 36

My groups mode is 21 23 and 46

I know I got all mine right because I calculated it about three times

1 comment:

  1. Wendy (Loks mum)27 March 2014 at 11:56

    Wow, this is great. Dad and I really enjoyed talking to you about this and you explaining to us what the difference was between the mean, median and mode. We love hearing about your learning.