Descriptive Statistics Flashcards
What is the tabular tool
Like a table of data
What is a frequency distribution of a categorical variable
It’s groups the data into categories and counts the frequency of observations that fall into each category
What are some ways to mislead people using bar, charts and other charts
By manipulating excess length and labeling things in a confusing manner
What is a contingency table?
And a table aware, both the rows and columns have meaning, and each spot represents an exclusive combination of the X & Y values
What is a stacked column chart?
It is a visualization of a contingency table that takes the shape of a bar chart where each bar area is divided along the different variable categories
What is cumulative frequency and cumulative relative frequency
Cumulative Frequency is the number of units that fall below The upper threshold of an interval and all the intervals below it, and cumulative relative frequency is the percentage or ratio of units. That falls below the upper threshold of an app interval.
What is relative frequency distribution
The proportion of observations to falls within an interval
What is a polygon in statistics?
Basically a histogram, but instead of like Staples, they have lines and dots
What is the difference between an ogive in a polygon?
Adults in a polygon has the x coordinates in the middle of the interval, while an ogive has the x-coordinate at the end of the interval
What is a stem and leaf diagram
It consists of simplifying numerical variables into two digits. The stem is the first digits, and the leaf is the last digit, lifting you see how variables are centered, and where they tilt
