A false positive occurs when a radiologist who interprets a mammogram concludes that cance...

A false positive occurs when a radiologist who interprets a mammogram concludes that cancer is present, but a biopsy subsequently shows no breast cancer. False positives are unavoidable because mammogram results often are ambiguous. Below are false positive rates (percent) for 24 radiologists who interpreted a total of 8,734 mammograms, (a) Calculate the mean, median, mode, and midrange. (b) Which is the best measure of central tendency? The  worst? Why? ( Data are from Joann G. Elmore et al., "Screening Mammograms by Community Radiologists: Vari­ability in False Positive Rates," Journal of the National Cancer Institute 94, no. 18 [September 18, 20021, p. 1376.)