5 immune boosters to stave off colds and flu Easy, affordable things you can do to help prevent and fight against colds and flu, before you even get a sniffle. by Vivian Manning-Schaffel / Dec.20.2017 / 10:59 AM ET
The binomial coefficient is the number of ways of picking unordered outcomes from possibilities, also known as a combination or combinatorial number. therefore gives the number of k-subsets possible out of a set of distinct items. For example, The 2-subsets of are the six pairs , , , , , and , so . The number of lattice paths from the origin to a point ) is the binomial coefficient (Hilton and Pedersen 1991).
Correlation Coefficient. A number that is a measure of the strength and direction of the correlation between two variables. Correlation coefficients are expressed using the variable r, where r is between 1 and â1, inclusive. The closer r is to 1 or â1, the less scattered the points are and the stronger the relationship. Only data points with a scatterplot which is a perfectly straight line can have r = â1 or r = 1.