Add
- $- 1.7 + [ 0.6 + ( - 0.2 ) + 0.5 ]$

question 146

Multiple Choice

Add.
- $- 1.7 + [ 0.6 + ( - 0.2 ) + 0.5 ]$

• A) \(2.6\)
• B) \(3.2\)
• C) \(- 0.8\)
• D) \(- 0.4\)

---

Definitions:

Population Variances

Population variances measure the dispersion of all data points in a population around the population mean, reflecting the overall variability within that population.

Significance Level

A threshold of probability set before conducting a hypothesis test, below which the null hypothesis is rejected, symbolized as alpha (α).

Standard Deviation

Standard deviation is a statistical measure that quantifies the variation or dispersion of a set of data points or values around their mean.

Test Scores

Numerical or grading assessments that evaluate a person's performance on academic or skill-based tests.