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Answer:
figure 1
mean: 8.48
variance: 465.64
standard deviation: 21.58
figure 2
mean: 144.75
variance: 124846.66
standard deviation: 353.33
Step-by-step explanation:
1. add all the data in figure 1
2. divide the sum of the data into the number of the data.
3. your answer in step 2 is the mean
4. subtract each data into the mean.
5. once you subtract all the data into the mean, add it all.
6. divide your answer in step 5 to the number of data minus 1.
7. your answer in step 6 is your variance
8. get the square root of your variance
9. your answer in step 8 is your standard deviation.
REPEAT all the step in figure 2
hope you understand.