Two-way tables (Edexcel GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
In stratified sampling with a two-way table, what does each cell represent?
In stratified sampling with a two-way table, what does each cell represent?
A subgroup in the population
How do you find the proportion of each stratum in the population?
How do you find the proportion of each stratum in the population?
Divide cell count by total population
Why is proportional representation important in stratified sampling?
Why is proportional representation important in stratified sampling?
Reflects population accurately
Which benefit does stratified sampling provide over simple random sampling?
Which benefit does stratified sampling provide over simple random sampling?
Reduces sampling bias
In stratified sampling, what does a well-constructed two-way table help to ensure?
In stratified sampling, what does a well-constructed two-way table help to ensure?
Proper subgroup representation
Using the example table, what is the total population size?
Using the example table, what is the total population size?
11,270
For Under 25, Female (1543) with sample 120, how many should be chosen after rounding?
For Under 25, Female (1543) with sample 120, how many should be chosen after rounding?
16
Which procedure is correct when calculating stratified samples?
Which procedure is correct when calculating stratified samples?
Keep proportions as decimals until final step
From a population of 120+80+200+100=500, sample 50. How many from Year 11 females (200)?
From a population of 120+80+200+100=500, sample 50. How many from Year 11 females (200)?
20
In the library example, rounded samples total 119. Where to add 1 by the golden rule?
In the library example, rounded samples total 119. Where to add 1 by the golden rule?
25 and over, Female