Answer is <span>x = -7
...................................................</span>
Answer:
8
Step-by-step explanation:
mean of A=28+23+30+25+27/5 = 26.6
average of B=22+19+15+17+20/5 = 18.6
now,
difference= 26.6-18.6
=8,,
X= 102 • + (75) there you go
Answer:
3.5
Step-by-step explanation:
you will go like sum of frequency multiplied by score divided by sum of frequency