Using it's concept, it is found that the variance of the given data-set is of 17.14.
It is the sum of the differences squared betweene each observation and the mean, divided by the number of values.
The mean of the given data-set is given by:
M = (3 + 4 + 5 + 7 + 10 + 12 + 15)/7 = 8
Hence, the variance is given by:
V = [(3-8)² + (4-8)² + (5-8)² + (7-8)²+ (10-8)² + (12-8)² + (15-8)²]/7 = 17.14.
More can be learned about the variance of a data-set at brainly.com/question/25639778
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Answer:
(3 + 4 + 5 + 7 + 10 + 12 + 15)/7 = 8
(3^2 + 4^2 + 5^2 + 7^2 + 10^2 + 12^2 + 15^2)/7 - 8^2 = 17.14285714
Answer:
Step-by-step explanation:
There are approximately 7.5 × 10¹⁸ grains of sand on earth.
There are approximately 7 × 10²⁷ atoms in an average human body.
A. There are more atoms in an average human body. When comparing the order of magnitude of each number 27 it greater than 18.
7 × 10²⁷ > 7.5 × 10¹⁸
B. Now we will calculate how many times more atoms are in a human body compared to grains of sand on earth.
=
≈ 1 × 10²⁷⁻¹⁸
≈ 1 × 10⁹
≈ 10⁹
There are approximately 1,000,000,000 atoms more in a human body compared to the grains of sand on earth.