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Correlation coefficient
- These are numerical measures of the correlations existing between the independent and the dependent variables
- These are better measures of correlation than scatter diagrams or graphs
- The range for correlation coefficients lies between negative (-ve) 1 and positive (+ve) 1. A correlation coefficient of positive (+1) show that there is perfect positive correlation. A value of negative (-ve) implies that there is perfect negative correlation. A value of 0 implies no correlation at all
- Given chart will be found useful in interpreting correlation coefficients
There are generally two types of correlation coefficients normally used that is:
From the data given below calculate the value of first and third quartiles, second and ninth deciles and forty-fifth and fifty-seventh percentiles.
I am greater than 30 and less than 40. The sum of my digits is less than 5. who am I?
Cluster Sampling Cluster sampling is where a few geographical regions for illustration, a location, village or town are selected at random and say every single household or sho
how do you slove 4u-5=2u-13
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Draw the direction field for the subsequent differential equation. Draw the set of integral curves for this differential equation. Solution: y′ = y - x To draw direct
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to which subset of the real number does the number 22 belong?
Consider the system of linear equations X + ay = 1 2x + 8y = b Where a and b are real numbers. (a) Write out the augmented matrix for this system of linear equations.
Graph y = tan ( x ). Solution In the case of tangent we need to be careful while plugging x's in since tangent doesn't present wherever cosine is zero (remember that tan x
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