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Arsenic: Exposure, Effect & Contamination

Arsenic is a naturally found chemical element whose atomic number is 33 with a symbol as ‘As’. It occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. Arsenic is one of the fundamental chemical element. It is a metalloid. Symbol: As …

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Analysis of Variance and F test

We can test the significance of the two sample means by using a t-test. However, in cases where there are more than two samples, it is done by Analysis of Variance (ANOVA). This method is carried out by comparing sample variances using Variance Ratio Test or F test. So at …

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