Hello.
I have attributes (1,2,3....8).
Each attribute has ist value in percentages, like 1=0,03%; 2=0,07%; 3=0,26%; 4=1,05%; 5=7,49% and 8=100%.

For 6 and 7 I do not have percentages, but the average of both should be 26,78%.
Can I calculate average of 6 and 7 in order the trendline will be exponential like

https://www.google.ro/search?q=expon...=1504273000609

Thanks in advance.