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Finding mean, mode and Median

1. The mean price of 5 items is $7.00. The prices of the first four items are $6.50, $8.00, $5.50 and $6.00. How much does the fifth item cost?

2. The range of a set of numbers is 1,362. The greatest number is 2,172. What is the least number?

3. The mean of a set of 7 numbers is 13. What is the sum of the numbers?

4. Find the mode of the following test scores:

89, 78, 91, 82, 75, 89, 84, 95, 89, 93

5. The mean of a set of data is 174.25 and the sum of the data is 1,394. How many numbers are in the set?

6. The grade point averages of 10 students are listed below. Find the median grade point average.

3.15, 3.62, 2.54, 2.81, 3.97, 1.85, 1.93, 2.63, 2.50, 2.80

Solution Preview

1.The mean price of 5 items is $7.00. The prices of the first four items are $6.50, $8.00, $5.50 and $6.00. How much does the fifth item cost?

Sum of prices of 5 items=number of items*mean=5*7=35
Sum of prices of first four items=(6.50+8.00+5.50+6.00)= 26.00
Price of fifth item=sum of prices of 5 items-sum of prices of 4 items=35-26=$9

2. The range of a set of numbers ...

Solution Summary

There are 6 basic problems. Solution provides formula and methodology to find the answer in each case.

$2.19