Consider Only the Discriminant $b ^ { 2 } - 4 a c$

question 4

Multiple Choice

Consider only the discriminant, $b ^ { 2 } - 4 a c$ to determine whether one real-number solution, two different real-number
solutions, or two different imaginary-number solutions exist.
- $$x ^ { 2 } + 4 x + 5 = 0$$

• A) Two different real-number solutions
• B) One real solution
• C) Two different imaginary-number solutions

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Definitions:

Mean

The arithmetic average of a set of numbers, calculated by summing them and dividing by the count of numbers.

Sample Range

The difference between the largest and smallest values in a sample, used as a measure of variability.

Outlier

A data point that differs significantly from other observations and can potentially skew results.

Measures Of Variability

Statistical values that describe the dispersion or spread in a dataset, such as range, variance, and standard deviation.