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suselygonza
01.07.2019 •
Mathematics
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
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Ответ:
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.
Ответ:
answer:
i dont get it
step-by-step explanation: