the stem - and - leaf plot below gives the gas mileages (in miles per gallon) for 16 new cars. use the plot…
the stem - and - leaf plot below gives the gas mileages (in miles per gallon) for 16 new cars. use the plot to answer the questions that follow.\ngas mileage (miles per gallon)\n1|2 6\n2|0 3 6\n3|0 1 4 9 9\n4|0 5 7 9\n5|0 8\nkey: 1|2 means a gas mileage of 12.\n(a) what is the lowest gas mileage in the 30s?\n(b) how many cars have a gas mileage in the 10s?\n(c) what is the highest gas mileage overall?
Answer
Explanation:
Step1: Understand stem - and - leaf plot
A stem - and - leaf plot shows data where the stem is the leading digit(s) and the leaf is the trailing digit. The key 1|2 means 12.
Step2: Find the lowest mileage
Scan the plot for the smallest value. The smallest value in the plot is 16.
Step3: Count cars with mileage in 10s
Look at the stems representing the 10s (stem = 1). The leaves for stem = 1 are 6, so there is 1 car with mileage in the 10s.
Step4: Find the highest mileage
Scan the plot for the largest value. The largest value in the plot is 58.
Answer:
(a) 16 (b) 1 (c) 58