A voter polling research group determined that between 40% and 46% of the voting population would vote for the republican candidate on elections day. What was the margin of error for this research?
the frange as given is 40% and 46%
40 +46=86
the middle value is 86/2
43%
43-40=3
43-46=-3
the margin of error for this research will therefore be ±3%
It is hard to explain in my opinion but I can try. For the stem column you, basically factor out the first digit of the number. Then the leaf column you, put the second digit of each number in your data set.
