Accredited Test Bank Solution For
Statistics Informed Decisions Using Data,
7th Edition Sullivan [All Lessons
Included]
Part 1: Data Collection
1. Introduction to the Practice of Statistics
Q1. What is the primary
...
Accredited Test Bank Solution For
Statistics Informed Decisions Using Data,
7th Edition Sullivan [All Lessons
Included]
Part 1: Data Collection
1. Introduction to the Practice of Statistics
Q1. What is the primary goal of statistics?
A) To collect data
B) To summarize data
C) To make informed decisions based on data
D) To perform experiments
Answer: C) To make informed decisions based on data
Explanation: The primary goal of statistics is to analyze and interpret data to make informed decisions. While
collecting and summarizing data are important steps, the ultimate aim is to use this information for decisionmaking.
Q2. Which of the following best describes a population in statistics?
A) A subset of data points from a study
B) The entire group about which information is sought
C) Data collected from an experiment
D) Randomly selected individuals from a study
Answer: B) The entire group about which information is sought
Explanation: In statistics, a population refers to the complete set of individuals, items, or data points that
researchers are interested in studying.
2. Observational Studies and Designed Experiments
Q3. What distinguishes a designed experiment from an observational study?
A) Use of random sampling
B) Control over the assignment of treatments
C) Collection of qualitative data
D) Analysis of existing data
Answer: B) Control over the assignment of treatments
PAGE 5
Test & Solution
Explanation: In designed experiments, researchers have control over the assignment of treatments to subjects,
allowing them to establish causality. In observational studies, researchers observe without manipulating
variables.
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