दो चरों x तथा y के लिए यह ज्ञात है कि Cov (x,y) = 80, x का विचरण 16 है तथा उसके माध्य से y के विचलनों
का योग है 250 .
इस द्विपदीय डाटा के लिए अवलोकनों की संख्या है
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The rose is a type of flowering shrub. Its name comes from the Latin word Rosa. The flowers of the rose grow in many different colors, from the well-known red rose or yellow roses and sometimes white or purple roses. Roses belong to the family of plants called Rosaceae..
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