What measure of spread is used when your data distribution is symmetrical?
Answer: When the data distribution is symmetrical, the appropriate measure of spread is standard deviation. The reason is both sides of symmetrical distribution will have same spread.
Symmetrical distribution: Symmetrical distribution is one when both sides of the distribution are identical. The symmetrical distribution is bell shaped and mean, median and mode are equal in symmetrical distribution.
Standard deviation: Standard deviation is the measure of dispersion. It measures the deviation of a set of numbers from its mean. It is defined as the square root of means of the squared deviations from the arithmetic mean
Answer:
The answer to your question would be <u>18x+15</u>
Steps of Getting the Answer
<u>The first step is to distribute</u>
=(9)(2x)+(9)(1)+6
9 x 2x = 18 and 9 x 1 = 9
= 18x+9+6
<u>The second step of solving this would be combining like terms</u>
=18x+9+6
=(18x)+(9+6)
And that's how 9(2x+1)+6 = <u>18x+15</u>
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Answer:
900
Step-by-step explanation:
I used the box method
18/140
9/70
1/7.78
1 square foot = $7.78