Question

Use the data provided to find the proportion of respondents who own​ Dell, Apple, and HP computers.

Brand	Proportion
Dell	?
Apple	?
HP	?

Brand	Cost	Year of Purchase	Purchase reason	Rating (1 low, 5 high)
Dell	700	2014	Cost	4
Apple	1,500	2014	Brand name	4
Dell	800	2014	Cost	5
Dell	800	2012	Cost	4
Dell	1,000	2011	Cost	4
Apple	1,000	2012	Brand name	5
Apple	1,200	2012	Prior use	4
Dell	1,000	2010	Cost	3
Dell	800	2012	Brand name	5
Dell	700	2011	Customer service	5
Apple	1,300	2012	Brand name	4
HP	600	2013	customer service	5

Answer 1

From the table it can be seen that:

Total No. of Respondents = 12

No. of respondents who own​ Dell = 7

So, proportion of respondents who own​ Dell = 7/12 = 0.5833

No. of respondents who own​ Apple = 4

So, proportion of respondents who own​ Apple = 4/12 = 0.3333

No. of respondents who own​ HP = 1

So, proportion of respondents who own​ HP = 1/12 = 0.0833

Brand	Proportion
Dell	0.5833
Apple	0.3333
HP	0.0833