1. Normal crease. The chemical formula curve is the curve that is referred to as the "bell" curve. The normal curve is symmetric around point "0" on the X axis. The bell shape conforms to the normal statistical distribution, wherein 68% of the cases argon in spite of appearance one standard deviation of "0", 95% of the cases are within 2 standard deviations of "0", and 99.7% of the cases are within three standard deviations of "0".
2. Standard error of the mean. The standard error of the mean is the standard deviation of the sampling distribution of the mean. Larger samples produce smaller standard errors of the mean because the standard error of the mean is calculated by dividing the standard deviation by the square root of the number of items in the data set. Thus, the size of the standard error of the mean is inversely proportionate to the square root of the sample size.
3. Null possibility.
The null speculation holds that variations in the value of one variable are orthogonal to variations in the value of a second variable. When the null hypothesis tooshie be rejected at some defined level of statistical significance, then, by inference, one can stat
5. Linear relationship betwixt two variables (correlation coefficient). Correlation is a measure of the level of association between two ordered variable sets. The correlation coefficient expresses the strength of the association, which can range from "0", or no association, to "1", or complete association. standstill refers to the extent that movements in the values in the data sets are comparable, as opposed to the actual values. Association does not permit causal inferences.
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