Here are data for prices of 12 used upright pianos in the classified section of a newspaper.
100 450 500 650 695 1,100 1,200 1,200 1,600 21,00 2,200 2,300
a. Who or what are the individuals of interest?
b. Display the data with a stemplot, first truncating the tens and ones digits. Use thousands for stems, splitting in two, and hundreds for leaves.
c. Construct a histogram for the data, using intervals of width 500 starting at 0 and including left endpoints, so the price 500 would be included in the second interval, not the first.
d. Modify your histogram from part (c) to identify midpoints along the horizontal axis.
e. How would the appearance of the histogram change if the vertical axis recorded percents instead of frequencies?