Equations
if x are numbers in a set of data and n is the amount of data, what does this equation mean: ((x1)+ (x2)+ ... + (xn)) / n
average
Which visual representation arranges numerical data into ordered rows where values are split by place values
Stem and Leaf
This type of variable is strictly whole numbers (x2 give the other type)
Discrete ... Continuous
What is something people take to give feedback on their personal experience?
A Survey
The piece of data that appears the most
the mode
q3 - q1 is for
IQR
The y-axis of a histogram is called? (2x Define this vocab word)
Frequency - the amount of times a data appears
The variations of variables is called
variability
What are two common types of data that must be identified before organizing information?
Categorical & Qualitative Data
This greek letter stands for average
μ
what equation does y-hat stand for
regression, line of best fit, predicted values
This type of graph compares two qualitative datas
venn diagram, two way table
This type of variable calls the x-axis home
independent variable
The min, q1 , median , q3 , max are collectively called
5 number summary
The intervals on a histogram are called
bin width
Max - Min find this about a data set
range
What is the difference between a histogram and a bar graph when organizing data?
histogram: numbers ; bar graph: words
write this greek letter to state the diversity of the spread of data
σ ^ 2
This type of data skews the group
an outlier
In terms of scatter plots this letter: r stands for (x2 state the three types)
correlation (strong, moderate, weak)
What's the following equation find:
average
Name 2 types of displays of data. One for categorical data and one for quantitative data
Qualitative: Stem & leaf, Histogram, Dot Plot, Scatter Plot
Categorical: Venn Diagram, Bar Graph, Two-Way Table
This type of variable can lead to misinformed conclusions
Confounding variable
This type of data affects the true reflection of what's being documented
bias
The square root of this variable stands for standards deviation
σ