Mean of a data = Sum of all observations ÷ Total number of observations
Mean of this data will be :
Sum of all observarions = 17 + 13 + 18 + 20 + 17 + 15 + 12 = 112
Total number of observations = 7
Mean = 112 ÷ 7
Mean = 16
Therefore the mean of this data set <em>=</em><em> </em><em>1</em><em>6</em><em> </em>
The first relation gives two y-values for any given x-value (except x=6).
y² +x = 6 . . . . . is not a function
1080 is correct hope this helps.
Total eggs=12
dozen eggs cost =1.35 dollars
one egg =12/1.35
=0.11 dollars
Meters, yards are not in the metric system
