Question

Using an appropriate measure,compare the variation of the following data set
Weights of newborn (kg):3.2,3.3,3.4,3.5,2.7,2.8,3.1
Heights of female(inches):70,72,70,67,65,80,71

Answer 1

Answer:

Using an appropriate measure,compare the variation of the following data set
Weights of newborn (kg):3.2,3.3,3.4,3.5,2.7,2.8,3.1
Heights of female(inches):70,72,70,67,65,80,71

$\bar x =\frac{\sum x}{n}$

$s =\sqrt{ \frac{\sum x^2- (\sum x)^2 /n)}{n-1}}$

coefficient of variation (CV) = (sd/mean)*100

Descriptive statistics
	Weights	Heights
n	7	7
mean	3.1429	70.7143
sample standard deviation	0.2992	4.7509
minimum	2.7	65
maximum	3.5	80
coefficient of variation (CV)	9.52%	6.72%

coefficient of variation for weights is 9.52% and heights is 6.72%.

Variation in weights is larger than variation in heights.