Use this for the answer to your question
Answer:
Range = 7
Mean = 7.75
Assumption: Most students will have 7 or 10 letters in their last name
Step-by-step explanation:
Range = Largest - Smallest
= 10 - 3
= 7
Mean = Add the total numbers up to get a total / numbers in the series
= (3+5+2(6)+2(9)+5(7)+4(8)+5(10)) / (1+1+2+5+4+2+5)
= 7.75
Put it al in a calculater here is a calculater website web2.0calc and tell me what you get and I ill tell you if you are right
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Two negatives equals a positive:
Add the numerators and keep the denominator: