human
Find combined mean and variance of two series | Function to find mean of series ..
Function to find the standard deviation of series ..
Function to find combined variance of two different series ..
mean1 and mean2 are the mean of two arrays ..
sd1 and sd2 are the standard deviation of two array ..
combinedMean is variable to store the combined mean of both array ..
d1_square and d2_square are the combined mean deviation ..
combinedVar is variable to store combined variance of both array ..
Driver Code.
Function call to combined mean ."
How can the above be solved in Python?

Can you provide a code to find combined mean and variance of two series and the other steps required?
assistant
#Here is code to find combined mean and variance of two series and the other steps required.
 def mean ( arr , n ) :
	sum = 0 ;
	for i in range ( n ) :
		sum = sum + arr [ i ] ;
	mean = sum / n ;
	return mean ;
def sd ( arr , n ) :
	sum = 0 ;
	for i in range ( n ) :
		sum = sum + ( ( arr [ i ] - mean ( arr , n ) ) * ( arr [ i ] - mean ( arr , n ) ) ) ;
	sdd = sum / n ;
	return sdd ;
def combinedVariance ( arr1 , arr2 , n , m ) :
	mean1 = mean ( arr1 , n ) ;
	mean2 = mean ( arr2 , m ) ;
	print ( " Mean1 : ▁ " , round ( mean1 , 2 ) , " ▁ mean2 : ▁ " , round ( mean2 , 2 ) ) ;
	sd1 = sd ( arr1 , n ) ;
	sd2 = sd ( arr2 , m ) ;
	print ( " StandardDeviation1 : ▁ " , round ( sd1 , 2 ) , " ▁ StandardDeviation2 : ▁ " , round ( sd2 , 2 ) ) ;
	combinedMean = ( n * mean1 + m * mean2 ) / ( n + m ) ;
	print ( " Combined ▁ Mean : ▁ " , round ( combinedMean , 2 ) ) ;
	d1_square = ( ( mean1 - combinedMean ) * ( mean1 - combinedMean ) ) ;
	d2_square = ( ( mean2 - combinedMean ) * ( mean2 - combinedMean ) ) ;
	print ( " d1 ▁ square : ▁ " , round ( d1_square , 2 ) , " ▁ d2 _ square : ▁ " , round ( d2_square , 2 ) ) ;
	combinedVar = ( n * ( sd1 + d1_square ) + m * ( sd2 + d2_square ) ) / ( n + m ) ;
	print ( " Combined ▁ Variance : ▁ " , round ( combinedVar , 2 ) ) ;
arr1 = [ 23 , 45 , 34 , 78 , 12 , 76 , 34 ] ;
arr2 = [ 65 , 67 , 34 , 23 , 45 ] ;
n = len ( arr1 ) ;
m = len ( arr2 ) ;
combinedVariance ( arr1 , arr2 , n , m ) ;