To find the mean number of tractors made from February to September, we first need to add the number of tractors made in each month and then divide by the total number of months.
From the data given:
- February: 0
- March: 10
- April: 20
- May: 30
- June: 40
- July: 50
- August: 60
- September: 70
Now, we can sum these numbers:
\[ 0 + 10 + 20 + 30 + 40 + 50 + 60 + 70 = 280 \]
Next, we count the number of months, which is 8 (from February to September).
Now we calculate the mean:
\[ \text{Mean} = \frac{\text{Total number of tractors}}{\text{Number of months}} = \frac{280}{8} = 35 \]
Thus, the mean number of tractors made per month from February to September is 35.
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