Introduction to Statistics
This term describes the process of collecting, analyzing, interpreting, and presenting data.
What is Statistics?
This plot is used to show the relationship between two variables, typically with one variable on the x-axis and the other on the y-axis.
What is a scatterplot?
This measure of central tendency is the sum of all values divided by the number of values.
What is the mean?
This type of sampling involves selecting participants in such a way that every member of the population has an equal chance of being selected.
What is random sampling?
This type of curve is symmetric and bell-shaped, with the mean, median, and mode equal.
What is a normal distribution?
This type of statistic summarizes or describes the characteristics of a dataset
What are descriptive statistics?
This type of frequency distribution shows the number of observations that fall within a range of values.
What is a grouped frequency distribution?
This measure of spread tells us how much scores deviate from the mean and is the square root of the variance.
What is the standard deviation?
This type of nonprobability sampling involves selecting participants based on ease of access, such as choosing people who are nearby or readily available.
What is convenience sampling?
This score tells us how many standard deviations a value is from the mean.
What is a z-score?
This branch of statistics is used to make inferences about a population based on data from a sample.
What is inferential statistics?
his graph displays a frequency distribution with vertical bars representing the frequencies of values or intervals.
What is a histogram?
This measure of central tendency is the middle value when data is ordered from lowest to highest.
What is the median?
In this probability sampling method, the population is divided into subgroups, and a random sample is taken from each subgroup.
What is stratified sampling?
In a normal distribution, approximately this percentage of values lie within one standard deviation of the mean.
What is 68%?
This is the term for the average value in a dataset.
What is the mean?
This type of chart is best used to display the relationship between two continuous variables.
What is a scatterplot?
This measure of variability tells us the average amount by which scores differ from the mean.
What is the standard deviation?
In this type of sampling, the population is divided into subgroups, and a random sample is taken from each subgroup.
What is stratified sampling?
What percentage of the data in a normal distribution falls within two standard deviations of the mean?
What is 95%?
The goal of this type of statistics is to make predictions or inferences about a population based on a sample.
What is inferential statistics?
This type of data display shows how data points are spread out, with a central line representing the median and the “whiskers” representing variability.
What is a boxplot?
This is the measure of central tendency that represents the most frequently occurring value in a dataset.
What is the mode?
This type of sampling does not give every member of the population a chance to be selected, and participants are often chosen based on convenience or accessibility.
What is nonprobability sampling?
This formula is used to calculate a z-score.
What is (X - µ) / σ?