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A table titled Text messages sent has entries 7, 100, 1, 3, 17, 10, 15, 12, 7, 38.

What is the mean of this sample, which consists of 10 values randomly selected from the table?

Mean = 7 + 100 + 1 + 3 + 7 + 10 + 15 + 12 + 17 + 38
10

The mean of the third sample is .
A table titled Text messages sent has entries 7, 100, 1, 3, 17, 10, 15, 12, 7, 38.

What is the mean of this sample, which consists of 10 values randomly selected from the table?

Mean = 7 + 100 + 1 + 3 + 7 + 10 + 15 + 12 + 17 + 38
10

The mean of the third sample is .

1 answer

To calculate the mean of the sample, you sum all the entries and then divide by the number of entries.

First, let's sum the values:

\[ 7 + 100 + 1 + 3 + 17 + 10 + 15 + 12 + 7 + 38 \]

Performing the calculation step-by-step:

  1. \( 7 + 100 = 107 \)
  2. \( 107 + 1 = 108 \)
  3. \( 108 + 3 = 111 \)
  4. \( 111 + 17 = 128 \)
  5. \( 128 + 10 = 138 \)
  6. \( 138 + 15 = 153 \)
  7. \( 153 + 12 = 165 \)
  8. \( 165 + 7 = 172 \)
  9. \( 172 + 38 = 210 \)

So the total sum is \( 210 \).

Now, divide this total by the number of values (10):

\[ \text{Mean} = \frac{210}{10} = 21 \]

Therefore, the mean of the sample is 21.