The following stem and leaf plot illustrates the number of baseball cards owned by a...
MATHEMATICS
SAT 2021
The following stem and leaf plot illustrates the number of baseball cards owned by a group of friends. What is the average number of baseball cards that each individual owns? 1
- A. 31
- B. 33
- C. 32
- D. 35
Correct Answer: A. 31
Explanation
First, write out the individual values found within this stem and leaf plot to figure out how many values there are. Values:20,21,24,24,30,31,31,32,32,35,37,41,45 Now, finding the mean is the same as finding the average. Recall how to find the average: Mean/Average=Sum of all valuesNumber of values Thus, the mean number of baseball cards owned is found by the following: Mean=(20+21+24+24+30+31+31+32+32+35+37+41+45)/13
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