The Table Below Is the Probability Table for a Random

question 71

Short Answer

The table below is the probability table for a random variable X. Find the standard deviation of X. $$\begin{array} { l | l l l l } \text { Outcome } & - 1 & 0 & 1 & 2 \\\hline \text { Probability } & \frac { 3 } { 7 } & \frac { 1 } { 7 } & \frac { 1 } { 7 } & \frac { 2 } { 7 }\end{array}$$ Enter just a real number rounded off to two decimal places.

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Definitions:

Statistical Significance

a mathematical measure that indicates whether the results of a study are likely not due to chance at a specified level of probability.

Catastrophic Thinking

Catastrophic thinking is an irrational thought process whereby an individual believes that something is far worse than it actually is; it can pertain to obsessing over possible worst-case scenarios.

Personality-Disordered

Relates to individuals who have enduring patterns of behavior, thinking, and experiencing emotions that deviate from cultural expectations and cause distress or impairment.

Disease Risk

The probability of an individual developing a health disorder over a certain period.