what is statistic?
statistics is arranging lots of information (numbers) to be analysed and analysing the information as collection
ok, thanks but can u give me the examples?
for example, say you have 5 cats, you weight them individually and theses are the weights cat1, cat2 cat 3 cat 4 cat 5 2.5 kg, 2.2 kg, 1.9 kg, 2.0 kg, 2.5 kg
to statistically analyse this information, you could say, find the average weight to find the average of some data add the values together, and then divide by the number of values [sometimes the average is given this greek letter µ; 'mu'. pronouncd 'mew'] µ = (2.5 kg+ 2.2 kg + 1.9 kg+ 2.0 kg + 2.5 kg)/5 = (2.5+2.2+1.9+2.0+2.5)/5 kg = (4.7+3.9+2.5)/5 kg = (8.6+2.5)/5 kg = 11.1/5 kg = 2.22 kg so the average weight of the 5 cats is 2.22 kg
you could have some other data that said cat1,cat2,cat3,cat5, were nice and cat4 was not nice, you could say, take the mode of this data the mode is the most common value most of the cats were nice , so the mode of the niceness of the cat was that the cats were nice
if you took the average of the niceness of the cats you would get µ=(nice + nice+ nice + not nice +nice )/5 =(nice + nice+ nice +nice + not nice)/5 =( 4 nice + 0 nice )/5 =(4/5) nice =80% nice the cats were 80% nice
thanks a lot man!
Join our real-time social learning platform and learn together with your friends!