Monthly stock prices for two competing firms are as follows.

Month	Firm A	Firm B
January	$28	$21
February	31	24
March	32	24
April	35	27
May	34	25
June	28	20

1-

Calculate the sample mean, the sample variance, and the sample standard deviation for each firms stock price.(Round your answers to 2 decimal places.)

a.	Calculate the sample mean, the sample variance, and the sample standard deviation for each firms stock price.(Round your answers to 2 decimal places.)

	Firm A	Firm B
Mean	$	$
Variance	$	$
Standard deviation	$	$