Assalaam O Alaikum Sir Fareed. kindly help me in solving this question .

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(a)Compute Mean, Median and Mode from the following data.

No. of students 1 2 3 5 6
f 15 10 5 15 5

A paint retailer has had numerous complaints from customers about under-filled paint cans. As a result retailer started to inspect the incoming shipments. A recent shipment contained 2,440 gallon-size cans. The retailer sampled 50 cans and weighted each on a scale capable of measuring weight up to four decimal places and properly filled cans weight 10 pounds.
Now for this problem
1. Describe a population
2. Describe a variable of interest
3. Describe the data type of variable
4. Describe a sample