The examples are quick and concise with exam style questions, go to gcse maths if you need more indepth explanations. Want to download the sampling revision notes in pdf format. For example, how do you compare your score in a maths mock exam to your. Sampling revision maths maths gcse and alevel revision. It is an easy to use stratified sampling calculator which only requires minum data input. Maths revision video and notes on the topic of stratified sampling. A useful revision guide to the different methods of collecting data, such as tallying, questionnaires, grouping, stratified random sampling, for gcse maths. Total 662 total 220 162 382 country number of stamps france germany spain 8 italy 95 245 184 chris takes a sample of 50 stamps stratified by country. Random sampling random sampling is a method that, in a population, every element has a chance to be included in a sample. Sampling techniques include simple random sampling, systematic sampling, stratified sampling, opportunity sampling and quota sampling. Organise prepare revise pearson edexcel gcse 91 statistics.
Sampling basically means selecting peopleobjects from a population in order to test the population for something. Gcse maths edexcel foundation paper 1 21st may 2019 walkthrough and solutions duration. Stratified sampling is a sampling technique that preserves the given strata proportions. Sampling is the process of looking at a small selection of peopleobjects from a wider population in order to learn new information about that population. He uses a sample of 50 students, stratified by year group and gender. Stratified sampling stratum is another word for class, level or grade. This can be done in various ways for example by simply picking out of a hat or by using a random number generator on a calculator. As this method provides greater precision, greater level of accuracy can be achieved even by using small size of samples. Previous rounding highest lowest practice questions. Stratified sampling changing the subject of formula even ones with reciprocals. A worksheet and exam style practice questions covering gcse stratified sampling.
When a population is divided up into groups, taking a stratified sample ensures that each group is asked in the correct proportion. Lesson includes definition and builds the difficulty of examples which my class found insightful. Gcse maths revision stratified sampling teaching resources. A sample is a method of survey that takes a representative of the population. Apr 23, 2019 sampling techniques include simple random sampling, systematic sampling, stratified sampling, opportunity sampling and quota sampling. Sampling mathematics alevel revision revision maths. Edexcel gcse mathematics linear 1ma0 stratified sampling materials required for examination items included with question papers ruler graduated in centimetres and nil millimetres, protractor, compasses, pen, hb pencil, eraser.
For example, we might want to find out how people are going to vote at the next election. Introduction and sampling scool, the revision website. Sampling gcserevision, maths, handlingdatastatistics. This means that the conditions have been set up and controlled by the researchers in an artificial environment i. Stratified sampling higher collecting data ccea gcse. Stratified sampling practice questions corbettmaths. New grade 91 gcse maths edexcel revision question cards. Stratified sampling is a method we can use to make our sample more representative. If i actually pass my maths gcse it will be because of you, thank you. Stratified sampling worksheet and exam practice qs. Stratified sampling gcse maths revision video youtube. To do this, you might ask 500 people from the uk how many books they finished last year this is a sample. If the groups are of different sizes, the number of items selected from each group will be proportional. Andrew is going to carry out a survey of these students.
Gcse statistics revision notes collecting data sample this is. When considering a particular population it is usually advisable to. Samples are then pulled from these strata, and analysis is performed to make inferences about the greater population of interest. By separating the population into groups age groups, genders, etc. It might be a group of people or it could be simply a group of numbers. However, it is important that a sample is representative of the population. Stratified sampling is used to select a sample that is representative of different groups. Jenny is carrying out a survey for her gcse mathematics project.
Simple random sampling a selection process where each member of the population has an equal chance of being selected. If you really want to make sure you know gcse maths, reading through your study notes just isnt enough youll need to test yourself. Stratified sampling 396, 397 histograms 442, 443 probability from a table 351, 352, 353. Mathematics linear 1ma0 stratified sampling 3 minute maths. Passing gcse maths significantly increases your career opportunities by helping you gain a place on a college course, apprenticeship or even landing continue reading.
She uses a stratified sample of 60 students according to year group. The revise gcse revision planner helps you to plan and organise your time, stepbystep, throughout your gcse revision. Taking a few apples from each box to examine is the most convenient way. Gcse maths 91 non calculator topic list edexel gcse maths exams procedures. Stratified random sampling is a method of sampling that involves the division of a population into smaller groups known as strata. Jul 29, 2010 the topic of sampling from the year 9 book of the mathematics enhancement program. Taking a few apples from each box to examine is the most read more sampling statistics. Stratified sampling higher collecting data gcse maths revision. The examples are quick and concise with exam style questions, go to gcse maths if. An example will help understand stratified sampling better.
A useful revision guide to the different methods of collecting data, such as tallying, questionnaires, grouping, stratifiedrandom sampling, for gcse maths. Gcse grade boundaries leaks grade boundaries for edexcel gcse maths november 2019 foundation. Calculate the number of people that should be sampled from each age. The corbettmaths video tutorial on stratified sampling. The population is classified by age as shown in the table below. Buy new gcse statistics edexcel revision guide for the grade 91 course with online edition cgp gcse statistics 91 revision by cgp books, cgp books isbn. Data collection and sampling revision cards teachit maths stratified sampling gcse questions parking permits stratified sampling student sheet, notes, slides nuffield foundation.
Stratified sampling for gcse maths coursework help hello all, the data i am using was collected online using a reaction timmer game. This video also includes looking at the difference between a. Random and stratified sampling questions, worksheets. A gcse maths worksheet covering stratified sampling suitable for gcse students sitting the 9 1, alevel maths students revision and some. Aug 27, 2012 the corbettmaths video tutorial on stratified sampling. Topics include populations, census, sample surveys, sampling units, sampling frames, random sampling, systematic sampling, stratified sampling and quota sampling. Work out the number of students in the sample who arc malc and in the first.
Gcse revision video 31 stratified sampling youtube. The topic of sampling from the year 9 book of the mathematics enhancement program. Stratified sampling is a method of sampling which selects a sample from each layer of a population, sized according to how big that layer is. Gcse 91 statistics revision guide revise pearson edexcel gcse 91 statistics revision guide revise pearson edexcel gcse 91 statistics revision guide our revision resources are the smart choice for those revising for pearson edexcel gcse 91 statistics.
See more ideas about gcse math, math and gcse revision. Stratified random sampling ensures that no any section of the population are underrepresented or overrepresented. Corbettmaths videos, worksheets, 5aday and much more. Stratified sampling gcse maths revision video duration. Click here to try the quick test stratified sampling. Free taster packs english ks3 english key stage 4gcse english maths ks3 maths ks4gcse maths ks5 maths science. Gcse revision video 31 stratified sampling duration. New gcse statistics edexcel revision guide for the grade. Stratified sampling questions worksheets and revision mme. Stratified sample where the data sampled is in proportion to the population. The concept of having a representative leads to random sampling.
Use this book and wall chart to mastermind your revision. Each one starts off with quick questions to warm you up, followed by harder questions to get your brain into. Stratified sampling 1 stratified sampling can be used when the population can be split into distinct groups. Everyday low prices and free delivery on eligible orders.
A population is a group that we want to find information about. Sampling, systematic sampling, stratified sampling and quota sampling. Random and stratified sampling this lesson can be used for revision for the higher maths gcse. Data stratified sampling the table shows information about chris collection of 662 stamps. Stratified sampling is when the population can be classified into groups or strata. Work out the number of year girls that should be in the sample. This is a website which cointains a stratified sampling calculator to save you time from having to do the maths. I know i need to take a stratified sample but im really not sure where to begin. She takes a random sample of 70 students stratified by year and by gender. Random and stratified sampling questions, worksheets, videos. Alevel maths statistics revision looking at sampling. What topics are in 2019 gcse ocr maths non calculator edexcel maths exam edexcel maths.
New grade 91 gcse maths edexcel revision question cards higher. For example, suppose you want to know about reading habits in the uk. Stratified sampling made easy your free online maths tutor. Revision aids a variety of revision aids and materials to support exam preparation. Sampling alevel maths statistics revision, topics include. For information about these resources and an index for the whole collect. The stratified sampling calculator was developed by jacob cons.
And thats where these cgp revision question cards come in. Obviously we cant ask everyone in the country, so we ask a sample. There are 95 cards in the pack, covering every key grade 91 edexcel higher topic. If the groups are of different sizes, the number of items selected from each. Lesson includes definition and builds the difficulty of examples which my class found. Groups include age,gender, left handed or right handed and an average reaction time for both hands. Complete stratified sampling lesson made for my year 10, top set, gcse class.
Checking all the apples piece by piece will be timeconsuming. A teacher wants a sample of 50 people from a school. Gcse maths revision past papers worksheets online tests. Several boxes of apples are undergoing a quality check.
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