Pls !

the data set represents the population.

which formula should be used to calculate the variance?

a teacher recorded all of his students’ grades on the final exam as:

62, 77, 78, 80, 82, 82, 83, 84, 85, 87, 89, 95

consider the formulas:

Np4=12np2 with clear explanation.

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9