आंकड़ों 13, 17, 23, 26, 31, 28, 15, 34, 17 और 26 का जनसंख्या मानक विचलन (population standard deviation) ज्ञात कीजिए। (अपने उत्तर को दो दशमलव स्थानों तक पूर्णांकित करें।)

In a moderately skewed distribution, if Mean = 12 and Median = 8, then using Empirical relation (Mode = 3 Median - 2 Mean), what is the value of Mode?

If 4y - 5x = 15 is the regression line of y on x and the coefficient of correlation between x and y is 0.75, what is the value of the regression coefficient of x on y (bxy)?