I think the third one on both part a and b can't be used to find the answer
Answer:
61194.2707cm³
I suck at rounding so this is the answer not rounded :)
The standard deviation is the mean of the sum of the squared deviations between each observation and the mean. The measure of dispersion that is the easiest to compute is the interquartile range.
The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation implies that the values are dispersed over a wider range, a low standard deviation shows that the values tend to be close to the mean of the collection.
The term "standard deviation" (or "") refers to a measurement of the data's dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.
Learn more about standard deviation here
brainly.com/question/475676
#SPJ4
7y = 8x - 14
7y= 7(6) Reason : Given
7y = 42
8x -14 = 42 Reason: Because 8x - 14 equals to 7y
8x = 42 + 14 Reason : Because we flip 14 on to the other side of the equation thus it becomes opposute of what it was.
8x = 56
× = 7
Proven
9% of 3873.99=0.09 times 3873.99=348.6591