What do I do about the percents?

Question

jim766 · Answer

your going to need to be a little more specific...

jim766 · Answer

do you want to know how to change a percent to a decimal?

divide it by 100

anonymous · Answer

Hold on... I gotta post the question...

anonymous · Answer

It's the question here. http://openstudy.com/study#/updates/539cc36de4b0eb8de56da627 It'll take forever to copy and paste it.

rational · Answer

Your question :


 Robinson asked a random sample of 50 classmates whether they had ever read a Shakespeare play. He also asked whether they had ever seen a professional production of a play. He recorded his data in the two-way table shown below.

      	Shakespeare 	No Shakespeare 	Total
Play 	        17 	                    7 	                  24
No Play 	11 	                   15 	          26
Total 	28 	                   22 	          50

Which two-way relative-frequency table best reflects Robinson’s data?

A.
      	      Shakespeare 	No Shakespeare
Play 	           34% 	                 14%
No Play        66% 	                 86%


B.
      	       Shakespeare 	No Shakespeare
 Play   	66%                          14%
No Play 	34%                   	86%


C.
      	      Shakespeare 	No Shakespeare
Play 	            61% 	               32%
No Play 	    39% 	               68%

D.
         	Shakespeare 	No Shakespeare
Play          	68% 	                       39%
No Play 	32% 	                       61%

jim766 · Answer

take each number in the table and divide it by 50

jim766 · Answer

17/50 =

anonymous · Answer

34%?

jim766 · Answer

however this table seems to be set up so everything in the table is divided by 
the total of each column

jim766 · Answer

after the division, mult by 100 to turn it into a percent

anonymous · Answer

17/27=0.62962962963
7/22=0.31818181818
11/28=0.39285714285
15/22=0.68181818181
Now divide them all by 100? 
@Jim766

jim766 · Answer

no, multiply them by 100, or just move each decimal over two places to the right
(same thing)

jim766 · Answer

17/27 = 63%

jim766 · Answer

the trick with relative frequency tables, is knowing what each element in the table is divided by. 
they will always be divided by a total, but it could be the column totals,  or the row totals, of the total of everything...the columns and the row. 
what ever total they use it will be used consistently, each number will be divided by it.

jim766 · Answer

sorry that first one is supposed to be divided by 28, not 27, sorry typo

17/28=       7/22= 
11/28=      15/22=

jim766 · Answer

17/28=  61%     7/22= 
11/28=  39%     15/22=

anonymous · Answer

@Jim766 I think it's C.

jim766 · Answer

yes it is, sorry if I confused you with the typo...i get going too fast sometimes..