The Number of Cartoons Watched on Saturday Mornings by Students $g$

question 99

Multiple Choice

The number of cartoons watched on Saturday mornings by students in Mrs. Kelly's first $g$ | class is shown below.
$\begin{array} { l l l l l l l } \text { Number of cartoons watched } \boldsymbol { X } & 0 & 1 & 2 & 3 & 4 & 5 \\ \text { Probability } \boldsymbol { P } ( \boldsymbol { X } ) & 0.15 & 0.20 & 0.30 & 0.10 & 0.20 & 0.05 \end{array}$
Give the standard deviation for the probability distribution. de

• A) 1.46
• B) 1.89
• C) 1.18
• D) 2.25

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Definitions:

Graded Bed

A sedimentary or volcanic layer that displays a gradational change in grain size from bottom to top.

Current Strength

A measure of the flow rate of water within ocean currents, typically quantified in terms of volume per time, such as cubic meters per second.

Piling of Sediment

The accumulation or stacking up of sedimentary particles, often by natural processes such as water or wind transport.

Cross Beds

Cross beds are sedimentary structures forming as inclined layers within horizontal units of sediment, often indicating the direction of ancient wind or water flows.