Answer:
Concept: Caclulating Standard Variables
- We have a five number summary which is more than enough information to calculate our mean.
- The mean is the sum of all the numbers divided by the nth number of numbers.
- Note that we can only find a rough estimation not the EXACT value
- We do (min +max + 2(Q1+median+Q3))/8
- Now let's plug in our values!
- (0+85.3+2(8.4+17.4+30.9))/8
- Which gives us option B
- Hope this helps, give brainlist
Answer:
The percent error of the scale is 2,5%
Step-by-step explanation:
<h3>First Step</h3>
Calculate the difference (error) between the weight recorded and the actual weight in lbs.
difference = 164 - 160
difference = 4 lbs
<h3 /><h3>Second Step</h3>
Convert the difference into percentage by comparing the difference to the actual weight, then multiplied by 100%
percent of difference =
percent of difference =
percent of difference =
percent of difference = 2,5%
= (16x3 - 8x2 + 4x4) / 2x
= 4x * (4x2 - 2x + x3) / 2x
= 2 * (4x2 - 2x + x3)
= 8x2 - 4x + 2x3
Answer A