Given Are the First Three Terms of a Sequence That $- 14 , - 17 , - 20$

question 87

Multiple Choice

Given are the first three terms of a sequence that is arithmetic. Find a1 and d.
- $- 14 , - 17 , - 20$

• A) \(\mathrm { a } _ { 1 } = - 14 ; \mathrm { d } = 9\)
• B) \(\mathrm { a } _ { 1 } = - 14 ; \mathrm { d } = - 6\)
• C) \(a _ { 1 } = - 14 ; d = - 3\)
• D) \(\mathrm { a } _ { 1 } = - 14 ; \mathrm { d } = - 9\)

Recognition of the placebo effect and how it can influence research outcomes.

Understanding of the importance and methods of random assignment in research.

Awareness of various types of biases (e.g., selection, experimenter) that can affect research validity.

Ability to identify operational definitions within experimental contexts.