Scheme of Work - Statistics
|
Chapter |
Topic |
Number of Weeks |
Resources |
Comments |
|
1
|
Mathematical Modelling in probability and statistics |
1 |
Pg’s 1-2 |
Go over the meaning of quantitative and qualitative data; samples and populations |
|
Pg’s 1-2 |
Much of the work here can actually be covered in discussion. |
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2
|
Graphical representation of sample data (location) |
3 |
Pg 12-28 |
Frequency distributions; histograms; stem and leaf diagrams, vertical line graphs leading onto cumulative frequency step polygons. |
|
3
|
Methods for summarising data (dispersion) |
5 |
Pg 29-52 |
Measures of locations: mode and median. Measures of spread: quantiles, quartiles (of grouped or discrete data). Deciles and percentiles. Calculating quantiles from stem and leaf, cumulative frequency polygons and box and whisker plots. Coding and weighted means. |
|
4 |
Methods for summarising data (dispersion) |
3 |
Pg 53 - 68 |
Explain the terminology Measures of dispersion:range;IQR;variance Boxplots and outliers. Skewness |
Test on chapters 1 - 4 |
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|
5 |
Probability |
3 |
Pg 69 - 95 |
Venn diagrams; sample space diagrams; exclusive and complementary events, the addition and multiplication rules. Conditional probability Independent events Tree diagrams |
Approximately end of term 1 |
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|
6 |
Correlation |
2 |
Pg 114-130 |
Interpreting the product moment correlation coefficient and calculating it. |
|
7 |
Regression |
2 |
Pg131-145 |
Least squares regression line. Interpretation and extrapolation.
|
|
8 |
Discrete random variables |
4 |
Pg 148 - 166 |
Probability density function and cumulative density function Expectation and variance of random variables Discrete uniform distribution |
|
9 |
The Normal Distribution |
3 |
Pg 167 - 180 |
Mean and variance of normal distribution. Standardising and use of tables Use of cdf |
Approximately end of term 2 |
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|
Past papers question should be done throughout term 2 and continued after the course has been completed. |
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|
Chapter |
Topic |
Number of Weeks |
Resources |
Comments |
|
1
|
Binomial distributions |
1 |
Pg 7-22 |
Revise factorial notation, pascals triangle and binomials. Conditions for binomial distribution, probability function, parameters, cumulative probabilities Mean and variance of the binomial distribution |
|
Poisson distribution |
1 |
Pg 22-36 |
The mean and variance of the distribution. Poisson as an approximation to the binomial |
|
Test on chapter 1 |
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|
2 |
Continuous Random Variables |
2 |
Pg 37 - 57 |
Concept of a continuous random variable and its probability density function. Integration methods may need to be revised Cumulative distribution function. Mean and variance of a continuous random variable. Calculating the mean, median ( Median: F(m) = ½) and quartiles of continuous random variables Relationship between f(x) and F(x) |
Test on chapter 2 |
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|
3 |
Continuous distributions |
1 |
Pg 71- 83 |
Continuous uniform (rectangular) distribution; calculating the mean and variance. Normal distribution as an approximation to the binomial and poisson distribution. Using the continuity correction. |
|
4 |
Hypothesis Tests |
3 |
Pg 85-107 |
Populations and samples (Sampling units and frames; advantages and disadvantages); collecting data. Concept of a statistic. Hypothesis tests (one and two tailed) Critical regions Hypothesis test for the proportion ‘p’ of a binomial and poisson distribution |
Test on chapter 4 |
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|
Aim to finish the course around the end of November |
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|
Chapter |
Topic |
Number of Weeks |
Resources |
Comments |
|
1 |
Combinations of Random Variables |
0.5 |
Pg 1 - 6 |
Finding the expectation and variance of combinations of random variables. |
|
2 |
Sampling |
0.5 |
Pg 7 - 16 |
Methods of collecting data Taking a census and sampling (using random tables). Other methods of sampling. Sources of data (Students find this an easy concept but find the exam questions hard so give plenty of practice). |
|
3 |
Estimation, confidence intervals and tests |
3 |
Pg 17 - 60 |
The concept of standard error, estimators and bias. Distribution of the sample mean. Sample mean and variance as unbiased estimators of the population parameters. (This is a hard concept so give plenty of examples). Review the Normal distribution for The Central Limit Theorem. Confidence intervals/limits. Hypothesis tests for the mean of a normal distribution with known variance. Hypothesis tests for the difference between the means of two normal distributions with known variance. Interpreting results. |
Do the review exercise and then a test on chapters 1 to 3 |
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|
4 |
Goodness of fit and contingency tables |
2 |
Pg 73 - 104 |
Forming a hypothesis; finding the goodness of fit and degrees of freedom. The chi-squares distribution and general methods for testing the goodness of fit when the data are discrete (uniform, binomial, poisson) and continuous. Contingency tables
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|
5 |
Regression and correlation |
1 |
Pg 104 - 122 |
Spearmans Rank correlation coefficient. Testing the hypothesis that a correlation coefficient/population rank is zero |
Do the review exercise and then a test on chapters 4 and 5 |
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Remainder of term |
Past papers |
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Students can be given weekly test on the S2 and S3 syllabus. The Delphis tests can be used for this. |