Chapter 1
Define Discrete vs Continuous variables
Class limits vs class boundaries
class limits" refer to the actual highest and lowest values within a specific class interval, while "class boundaries" are the dividing points between classes
Define Standard Deviation
a measure of how dispersed the data is in relation to the mean
What is a sample space?
the collection of all possible outcomes in a probability experiment
Define Parameter vs Statistic
How do you find cumulative frequency
adding each frequency from a frequency distribution table to the sum of its predecessors
What are the 3 measures of central tendency?
Mean, Median, and Mode
Sample event vs compound event?
an event with one outcome vs an event with 2 or more outcomes
Ratio has a true 0 and Interval does not have a true 0
What does an Ogive graph show?
Cumulative frequency
What is 5 number summary?
Min, Q1, Median, Q3, Max
What is the complement of an event?
The complement of any event A is the event that A does not occur. The inverse probability of event A
What is systematic sampling?
How is a bar chart different than a histogram?
Bar charts depict categorical data and histograms depict continuous data
What is this describing? The range for the middle 50% of your sample.
Interquartile Range
𝑃(𝐴 ∪ 𝐵) = 𝑃(𝐴) + 𝑃(𝐵) − 𝑃(𝐴 ∩ 𝐵)
What is the difference between inferential vs descriptive statistics
Descriptive statistics summarize and describe the characteristics of a data set
Inferential statistics use data from a sample to make inferences and draw conclusions about a larger population
What type of graph is this? A statistical graph in which each data value is plotted as a point above the horizontal axis.
Dot Plot
How do you determine outlier boundaries?
Lower Bound: Q1 - (1.5 * IQR)
Upper Bound: Q3 + (1.5 * IQR)
Define mutually exclusive
Mutually exclusive is a statistical term describing two or more events that cannot happen simultaneously