The Sample Variance $$s ^ { 2 }$$ Is an Unbiased Estimator of the Population Variance

question 15

True/False

The sample variance $$s ^ { 2 }$$ is an unbiased estimator of the population variance $$\sigma ^ { 2 }$$ when the denominator of $$s ^ { 2 }$$ is n - 1.

---

Definitions:

One-shot Case Study

An experimental design where a single group is exposed to a treatment and then measured to assess its effect, lacking a control group for comparison.

Study Habits

Patterns and practices that are conducive to effective learning and information retention.

Causal Inference

The process of drawing conclusions about causal relationships based on the conditions of the occurrence of an effect.

Quasi-experimental Designs

Research designs that attempt to establish cause-and-effect relationships but lack random assignment to treatment and control groups.