maths

=maths= = = = = =i need to work on all my times tables so i can improve on all my maths= maths

Problem: A spinner has 4 equal sectors colored yellow, blue, green and red. What are the chances of landing on blue after spinning the spinner? What are the chances of landing on red?

one chance out of four on landing on red we can write it in different ways. E.g 1/4, 0.25, 25% ,1:4

Probability is the measure of how likely an event is.

P(A) = The Number Of Ways Event A Can Occur

The Total Number Of Possible Outcomes.

If you roll two regular dice 30 times, then add the numbers rolled, what do you think you will roll most often? Predict the sum. Now experiment. Roll both dice and add the two numbers rolled. Record the sum. Do this 30 times. Then tally the total number of times for each sum. How close was your prediction to what happened?

=maths= =the range is the difference between the highest and the lowest number in the data= 12-03-09

etc: test one wrong order : 42,55,47,61,59,71,49,53,65,61

right order : 42,47,49,53,55,59,61,61,65,71

mean is found by adding all the data together and dividing by the numbers.

median : we are looking for the middle number is 55+5 = 60 so sixty is the middle number

not in order :54,49,63,58,63,48,68,61,48,58 in order: 48,48,49,54,58,58,61,63,63,68

test two

range :- 68 - 48 = 20 mean :- 57 median:- 58.5 mode:- 48,58,63,