To analyze how many science articles Martin's classmates read, we can calculate some basic statistics such as the mean, median, mode, and range from the provided data set: 3, 2, 3, 3, 9, 5, 7, 8.
Mean:
The mean is calculated by adding all the values together and then dividing by the number of values.
\[ \text{Mean} = \frac{3 + 2 + 3 + 3 + 9 + 5 + 7 + 8}{8} = \frac{40}{8} = 5 \]
Median:
To find the median, we first need to sort the numbers in ascending order: 2, 3, 3, 3, 5, 7, 8, 9. Since there are 8 numbers (an even set), the median is the average of the two middle numbers:
The two middle numbers (4th and 5th) are 3 and 5.
\[ \text{Median} = \frac{3 + 5}{2} = 4 \]
Mode:
The mode is the number that appears most frequently. In this case, the number 3 appears three times, which is more than any other number.
\[ \text{Mode} = 3 \]
Range:
The range is calculated by subtracting the smallest number from the largest number.
\[ \text{Range} = 9 - 2 = 7 \]
Summary:
- Mean: 5
- Median: 4
- Mode: 3
- Range: 7
If you need further analysis or information, feel free to ask!
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