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Importance of Statistics in Biological Sciences

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Importance of Statistics in Biological Sciences

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Questions and Answers

What condition must be met for the sampling distribution of the sample mean to be approximately normally distributed?

Sample size n>50

Sample size n>30 (correct)

Sample size n>10

Sample size n>15

Which measure reflects the spread of numbers in a dataset from the mean and provides a measure of unsystematic error?

Sum of Squared Errors (SSE)

Standard Error (SE)

Standard Deviation

Variance (correct)

What does a z-score standardize scores from different distributions into?

Percentiles

Standard Deviations (correct)

Deciles

Percentages

What does standard error (SE) measure in relation to the sample mean and the population mean?

Precision of sample mean estimation Signup and view all the answers

What do qualitative methods utilize to test theories?

Non-numerical data like language from interviews or media broadcasts Signup and view all the answers

Which of the following best describes the concept of Central Tendency in statistics?

Measures the center of a data set, including mean, median, and mode Signup and view all the answers

What does the Interquartile Range (IQR) represent in statistics?

Refers to the middle 50% of scores in a data set Signup and view all the answers

In statistical terms, what does the term 'Fit of a Model' refer to?

Assessing how well a model describes the data and its deviations Signup and view all the answers

What is the primary purpose of Descriptive Statistics in biological sciences?

To visually represent data distributions Signup and view all the answers

Why is an understanding of Sampling Variations important in Inferential Statistics?

To recognize that samples from a population may not perfectly represent the population mean Signup and view all the answers