Which Statement Is Not True About Principal Components Analysis (PCA)

question 49

Multiple Choice

Which statement is not true about principal components analysis (PCA) ?

• A)The factors are estimated based only on the common variance.
• B)The total variance in the data is considered.
• C)PCA is recommended when the primary concern is to determine the minimum number of factors that will account for maximum variance in the data for use in subsequent multivariate analysis.
• D)The diagonal of the correlation matrix consist of unities.

Analyze the interconnectivity within the communication process and its influence on relationships and outcomes.

Understand the characteristics and challenges of electronic communication, including timing and reliability.

Comprehend the phenomenon of hyperpersonal relationships and how they differ from face-to-face relationships.

Grasp the role of deception in electronic communication and its prevalence among different relationships.

---

Definitions:

Plaque

A sticky deposit on teeth that can harbor harmful bacteria, leading to dental issues like cavities and gum disease.

Heart Murmur

Abnormal sounds during the heartbeat cycle—such as whooshing or swishing—caused by turbulent blood flow.

Heart Disease

A range of disorders affecting the heart, such as coronary artery disease, arrhythmias, and congenital heart defects.

Valves

Structures within the heart and veins that maintain the direction of blood flow by opening and closing according to the pressure gradient.