A sample of heights (in inches) of 20 female statistics students is as follows
68,60,68,71,68,69,66,65,66,61,69,69,72,67,66,67,71,60,66,70
1) Find the median height. Round your answer to 1 decimal place, e.g. 0.5.
2) Find the first and third quartiles. Round your answers to 1 decimal place, e.g. 0.5.
3) Find the inter-quartile range. Round your answer to 1 decimal places, e.g. 0.5.