Lecture 11 Flashcards
What is the general process of sampling?
Sampling involves selecting a subset of individuals from a population to represent the whole population.
What is the difference between a population and a sample?
A population includes all individuals of interest, while a sample is a subset of the population used for study.
Why do we take samples in statistics?
Samples are taken to make inferences about the entire population without having to study everyone.
What is the difference between location (central tendency) and spread in statistics?
Location (central tendency) measures where the data centers (e.g., mean, median), while spread measures the variability or dispersion of the data (e.g., range, standard deviation).
Why are statistics important in health sciences?
Statistics help understand the health of the population, including the prevalence of diseases, risk factors, and the effectiveness of treatments.
How is the mean calculated?
The mean is calculated by dividing the sum of all values by the total number of observations.
