A data set has a variance of 27 what is the standard deviation of the data set?
2 answers:
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Answer:
The estimate of the product is about 35 answer C
Step-by-step explanation:
- We use rounding to estimate the product of two fractions
- The mixed number has whole number and fraction
- To round the mixed number we look to the fraction
- If the numerator is half or greater than half the denominator, then we
add the whole number by 1 and cancel the fraction
- If the numerator is less than half the denominator, then we keep the
whole number as it and cancel the fraction
- Ex: If the mixed number is , 3 is more than
half 4 then we will add 2 by 1 and cancel the fraction part, the
mixed number after rounding is 3
- Ex: If the mixed number is , 1 is less than
half 4 then we will keep 5 as it and cancel the fraction part, the
mixed number after rounding is 5
* Lets solve the problem
∵ In the part 3 is more than half 4
∴ The rounding value of is 5
∵ In the part 2 is less than half 17
∴ The rounding value of is 7
∴
* <em>The estimate of the product is about 35</em>
7.5 = x + 
equals x = 6.
First, subtract from both sides. / Your problem should look like: 7.5 - = x.
Second, simplify 7.5 - to 6. / Your problem should look like: 6 = x.
Third, switch sides. / Your problem should look like x = 6, which is your answer.
First, subtract
Second, simplify 7.5 -
Third, switch sides. / Your problem should look like x = 6, which is your answer.