Chapter 1
Data that involves two variables
The process of fitting a line to data
When there is a long term upwards or downwards movement in the data
What is a trend?
The amount between each consecutive term on an arithmetic sequence, noted as d.
What is the common difference?
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Who is Blake Lively?
The two types of variables involved in bivariate data.
What are the response and explanatory variables?
Predicting outside the range of data
What is extrapolation?
Individual values that stand out from the general body of data.
What is an outlier?
A sequence that has a common ratio between the terms
What is a geometric sequence?
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Who is Simu Liu?
A type of chart that is used to display bivariate data, it involves dots placed at each data point.
What is a scatterplot?
A value in the regression line that depicts the value of the response variable when the explanatory variable is at 0.
What is the intercept?
A periodic movement in a time series that has a calendar related period, for example, a year, a month, a week.
What is seasonality?
A process that involves repeating the same calculation over and over, using the previous result to calculate the next result.
What is recursion?
What is the Cold War
A value that determines the strength of the relationship between the two variables
What is the correlation coefficient?
A graph that shows how far each data point is away from the regression line, with a zero line horizontally down the middle
What is the residual plot?
The process of a converting seasonal data back into its original form
What is reseasonalisation?
An amount by which the value of an item
decreases after a period of time.
What is depreciation?
40th president of the USA with both initials the same letter
Who is Ronald Reagan?
A value that determines how much of the variation in the response variable is explained by the explanatory variable
What is the coefficient of determination?
A word that implies that one variable is the cause of the other variable
What is causal?
the variations in a time series that we cannot reasonably attribute to systematic changes like trend, cycles, seasonality, structural change or the presence of outliers.
What are irregular fluctuations?
the use of a mathematical rule or formula to represent real-life situations.
What is modelling?
A movie with Tom Hanks where he grows in size
What is Big?