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3.95 1.04 Tuesday 1.03 1.2 Wednesday 1.475 3 Thursday 2.85 1.11 Friday 10 0 Saturday 6.25 1.21 Sunday 0 1.5 The summary statistics for the table above are: where So We have to transform back to the original variables and Rearrangement of this equation...

https://astarmathsandphysics.com/a-level-maths-notes/s1/3693-coding.html#### The Correlation Coefficient

table. x 2 4 7 3 5 1 y 10 5 2 9 4 10 To find the correlation coefficient it is most efficient to first find the summary statistics. Your calculator may have functions to help. They are The correlation coefficient is then calculated from r= This means...

https://astarmathsandphysics.com/a-level-maths-notes/s1/3701-the-correlation-coefficient.html#### Permutations

Permutations is that part of statistics involving arrangements of objects, some of which fall in the same group and some of which fall in different groups. Each object is distinct from all the other objects, so we can tell each one apart, and if two...

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draw conclusions about whether or not the result of an experiment was significant or not without knowing something about statistics and error analysis. A lot of physics can be done with quite basic maths - just substituting numbers into the right...

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The number of degrees of freedom is the number of values in thefinal calculation of a statistic that are free to vary. A simple example is shown in calculating the mean of a sample.Suppose isa sample from a population. Let The areestimates of the...

https://astarmathsandphysics.com/a-level-maths-notes/s3/3780-degrees-of-freedom.html#### Bias

If a test statistic is used as an estimate for a population parameter then in general we will not expect the value of to equal – the estimator may be biased for The bias of the estimator is given by An estimator for a population parameter is an...

https://astarmathsandphysics.com/a-level-maths-notes/s4/3798-bias.html#### Degrees of Freedom

The number of degrees of freedom is the number of values in thefinal calculation of a statistic that are free to vary. A simple example is shown in calculating the mean of a sample.Suppose isa sample from a population. Let The areestimates of the...

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If two populations are normally distributed withdistributions and wecan test the hypothesis that usingthe F - distribution. We take a sample from populations 1 and 2, ofsizes and respectively,and find the sample variances, and respectively.The test...

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