BESC 3010 - Ch 02 UVU - Poulson
Official | 2024/2025 | Graded A+
What are the key characteristics that define a statistical population?
A statistical population consists of all subjects or elements that share a common
characteristic, and it can include individuals, objects, events, or measure...
BESC 3010 - Ch 02 UVU - Poulson
Official | 2024/2025 | Graded A+
What are the key characteristics that define a statistical population?
✔✔A statistical population consists of all subjects or elements that share a common
characteristic, and it can include individuals, objects, events, or measurements that researchers
aim to study.
Explain the concept of a sampling frame in research design.
✔✔A sampling frame is a complete list of individuals or items from which a sample is drawn,
ensuring that every member of the population has a chance to be selected for the study.
How can you determine whether a data set is normally distributed?
✔✔A data set can be determined to be normally distributed by analyzing its histogram for a bell-
shaped curve, calculating skewness and kurtosis, or using statistical tests like the Shapiro-Wilk
test.
What is the significance of the Central Limit Theorem in statistics?
1
, ✔✔The Central Limit Theorem states that the distribution of sample means approaches a normal
distribution as the sample size increases, regardless of the population's distribution, facilitating
inferential statistics.
Describe the differences between descriptive and inferential statistics.
✔✔Descriptive statistics summarize and describe the features of a dataset, while inferential
statistics use samples to make predictions or generalizations about a population.
How do outliers impact the results of a statistical analysis?
✔✔Outliers can skew the results of statistical analyses by affecting measures such as the mean
and standard deviation, leading to potentially misleading conclusions if not addressed properly.
What is the role of a control group in an experimental study?
✔✔A control group serves as a baseline for comparison, allowing researchers to isolate the
effect of the treatment or intervention by controlling for other variables.
How do researchers ensure random sampling in their studies?
2
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