The quiz scores for two different groups of math students are given below. use the mean and standard deviation to determine which group has a higher average, and which group is more consistent. group a – 75, 72, 77, 80, 87, 82, 79, 80, 75, 82 group b – 71, 75, 85, 95, 71, 71, 90, 95, 87, 80

The average of group A is 78.9 and average of group B is 82. Therefore group B has a higher average.

The standard deviation of A is 4.1 and standard deviation of B is 9.23, therefore group A is more consistent.

Step-by-step explanation:

The quiz scores for two different groups of math students are given below.

Group A – 75, 72, 77, 80, 87, 82, 79, 80, 75, 82

Group B – 71, 75, 85, 95, 71, 71, 90, 95, 87, 80

Formula for mean is

The average of group A is

The average of group B is

The average of group A is 78.9 and average of group B is 82. Therefore group B has a higher average.

Formula for standard deviation is

The standard deviation of group A is

The standard deviation of group B is

The standard deviation of A is 4.1 and standard deviation of B is 9.23, therefore group A is more consistent.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values