A star has a diameter of 4,680,000,000 units. Express this number in scientific notation.
2 answers:
Answer:
Step-by-step explanation:
Scientific notation is defined as a way of writing very large or very small numbers.
A number between 1 to 10 is written in scientific notation when it is multiplied by a power of 10.
Here the given scenario is :
A star has a diameter of 4,680,000,000 units.
So, in scientific notation we can write this as :
We can check this if we multiply this by 10^9. This will shift the decimal to 9 places in the right side.
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Answer:
The correct option is A:
MAD = 1 + 1/4
Step-by-step explanation:
For a set of N elements {x₁, x₂, ..., xₙ}
The mean is calculated as:
And the mean absolute deviation is calculated as:
Here we have the set of 8 elements:
{ 2, 2, 3, 4, 4, 5, 6, 6}
The mean of this set is:
M = (2 + 2 + 3 + 4 + 4 + 5 + 6 + 6)/8 = 4
Then the mean standard deviation is:
If we simplify this, we get:
MAD = 10/8 = 5/4 = (4 + 1)/4 = 4/4 + 1/4 = 1 + 1/4
MAD = 1 + 1/4
The correct option is A.