Handling Data

677 Words2 Pages

Handling Data

My Hypothesis is that 'Boys in Year 10 are better at estimating

lengths of straight lines than Boys in Year 7'. The factors that

influence the accuracy of estimation are children in Year 10 are more

mature than children in Year 7. On average Children in Year 10 are

more intelligent than children in Year 7. This probably would be

because Year 10 students have studied subjects into further depth than

children in Year 7.

METHOD

To verify this I will do a sample of the boys in our school. To do

this I will find the total number of children in our school and sort

it out according to Y10's and Year 7's. I will find out this

information by going to the school office and finding out the figures.

Out of this population, I will do a stratified sampling of 60

children. To do a stratified sampling of 60 children in the whole

school, I will find the proportion of boys in Year 10 and Year 7.

STRATIFIED SAMPLING

In a stratified sample, the population is first divided into

categories and the number of members in each category is determined.

The sample is then made up of these categories in the same proportions

as they are in the population. Random sampling chooses the required

numbers in each category. In a random sample, every member of the

population has an equal chance of being chosen.

To obtain a sample of 60 students stratified according to Year 10 and

Year 7; I will have to calculate the number of boys from Year 10 and

Year 7, which must be represented in the sample.

A Sample of Students

====================

Year

====

Boys

====

Boys

10

110

33

7

89

27

TOTAL

-----

199

60

Altogether there are 1013 (one thousand and thirteen) students in our

school. To work out the proportion of boys in Year 10 and Year 7,

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