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WJEC S3 Statistics

CONTENTS

Permutations and combinations
Concept of a statistic
Estimating population parameters
Confidence interval for a mean or proportion with unknown variance
Testing the mean
Difference of two sample means with unknown variance
Regression lines
Proof of the least squares regression formula
Sampling theory of regression

DEPENDENCIES
*   WJEC Core 4 Maths
*   WJEC S1 Statistics
WJEC S2 Statistics
WJEC S3 Statistics
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