Yolanda wants to know how much time she typically spends on her cell phone. She goes to her phone’s website and records the call length for a random sample of 12 calls, shown in Table 3. Find the mean and median length of a cell phone call. Which measure of central tendency better describes the length of a typical phone call?

Approach We will find the mean and median using Minitab. To help judge which is the better measure of central tendency, we will also draw a dot plot of the data.

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3 Table 3 1 2 7 4 1 4 3 5 3 48 6