statistic form 3, how to teach ??

my answer is.
first, this chapter seperate into 2 diff subtopics.
1. pie chart question.
2.analysing data question.

pie chart
what is do was, i tell them a scenario.
im now analysis a school, finding out the percentage of student who go to school by what type of transport.
jet-50
walk-15
car-20
fly with hands-80

now find me the percentage.
so what i do is, i will total up the number and get 165 students in the school. later to find each of it i will take the total number 165 stud. divide by the amount i need, later multiply by 100% and i will get the percentage for each type of transportation.

hence, can u see that im using a Universally applicable formulae which tell us.

the amount you need (car/jet/walk/fly)   x   100 %  
total amount
= percentage for each sector.

then we will get the answer.
how if i wanna convert into angle format which the total is 360 degree ? u understand now ?

after this, i will enter into analysis question.

analysing data question
i further explain this into 2 diff types of question.
which is called the DATA question and TABLE question.

after telling them what is data and what is TABLE type question, we let them know what is Mode, Mean and Median.
Mode = highest Frequency
Mean = Average/Purata...just like your school report. total up the marks of 8 subjects then total marks divide by 8 subjects.
Median = middle of all data, after rearranging it into ascending order.

Types of Questions please refer our maths form 3 notes.
analysing data question.
we will have a table right ?
let them see this thing.
after u complete in explaining MEAN table type question.
u rub of one of the frequecy.

for example.
    score x        1     2     3     4
frequency y     4     3     1     6

mean we will total up xy then divide by total y right ?
then find the answer. this MEAN will be  2.5.

now RUB of the 6. and replace by x
Hint given, Means is 2.5. find x
this is what they dunno. =)


Gud luck in teaching. amithaba.