Question
Find the variance of the numbers 13, 16, 22, 17.
Find Differences from the Mean : Subtract the mean from each number and square the result: 
More Quadrilateral Questions
- In a quadrilateral ABCD, the diagonals AC and BD intersect at right angles. If AC = 16 cm and BD = 12 cm, find the area of the quadrilateral.
- In a parallelogram, adjacent sides are 10 cm and 8 cm, and the included angle between them is 60°. Find the area of the parallelogram.
- What is 4(a³b ⁶ ) 16 × 16(a ⁴ b²)2 equal to?
- The area (in square units) of the quadrilateral ABCD, formed by the vertices A (0, -2), B (2, 1), C (0, 4), and D (-2, 1) is:
- The diagonals of a parallelogram are 24 cm and 10 cm, and the angle between them is 60°. Find its area.
- In parallelogram ABCD, AB = 10 cm, BC = 7 cm and diagonal AC = 13 cm. Find the area of the parallelogram.
- In parallelogram ABCD, coordinates are A(1, 2), B(5, 4) and C(7, 6). Find the coordinates of D and the area of the parallelogram.
- The ratio of the angles of a quadrilateral is 3:2:7:8. What is the sum of the largest and the smallest angle?
- Find the variance of the numbers 13, 16, 22, 17.
- A solid hemisphere of radius 7 cm is melted and recast into small solid spheres each of radius 3.5 cm. How many such small spheres can be made?
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