Express each as ratio in the simplest form.:
1 answer:
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Answer: 8.3
Step-by-step explanation:
To find the variance, you want to find the mean of the data.
Now that we have the mean, we find the difference between each data point and the mean.
3-5=-2
3-5=-2
8-5=3
1-5=-4
9-5=4
6-5=1
With the difference, you square each and find the average.
(-2)²=4
(-2)²=4
3²=9
(-4)²=16
4²=16
1²=1
The variance is 8.3.
Answer:
520 out of 800 students ride the bus
Step-by-step explanation:
Given
Required
Determine the number of students
To do this, we simply multiply the proportion by the total number of students.
i.e.
Express the percentage as decimal
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