Fill in the blanks:(i) Co-efficient or variation = ……………...

Fill in the blanks:(i) Co-efficient or variation = ……………... .(ii) If \(\bar{x}\) is the mean of n values of x, then \(\sum_{i=1}^{n} (x_i-\bar{x})\)Is always equal to…………….. . if a has any value other than \(\bar{x}\), then \(\sum_{i=1}^{n} (x_i-\bar{x})\)2 is…………. than \(\sum(x_i-a)^2\). (iii) If the variance of a data is 121, then the standard deviation of the data is………… .(iv) The standard deviation of data is…………. of any change in origin, but……..on the change of scale.(v) The sum of squares of the deviations of the values of the variable is …………… when taken about their arithmetic mean.(vi) The standard deviation is……………………………to the mean deviation taken from the arithmetic mean.(vii) the standard deviation is the…………………….of the variance.

Answer»

(i) \(\frac{S.D.}{mean}\times100\)

(ii) 0, less;

(iii) 11;

(iv) Independent, depends;

(v) Minimum;

(vi) Greater than or equal;

(vii) Square root.