Q1) From practical point of view, what is difference between a frequency distribution and relative frequency distribution? Why is cumulative relative frequency distribution so much more informative that just relative frequency distribution? Use examples to explain these differences. 

Q2) Researcher wants to know whether or not individuals are more likely to help in emergency when they are indoors than when they are outdoors. Of 28 participants who were outdoors, 19 helped and 9 did not. Of 23 participants who were indoors, 8 helped and 15 did not. Enter these data and determine if helping behaviour is agented by environment. The key to this problem is in data entry (hint: how many participants were there and what do you know about each participants?