Correlations (+, -, 🛇)
The size of the bag of popcorn(x) and the price of the the popcorn(y).
Positive correlation
What needs to be included on the x- and y- axes along with the scale?
A label(s)
It is a line that demonstrates a TREND in the data shown on a scatterplot.
the line of best fit OR a trend line
The vocabulary term, an adjective, referring to data arranged in a straight line
Linear
The square root of 125 is between these two whole numbers:
11 and 12
The increase in temperature (x) and the number of heavy coats sold (y).
Negative correlation
A term used for a piece of data that doesn't quite fit with the rest of the data
Outlier
A group of points that lie close together without much of gap in between...
a cluster (of data points)
Increasing distance from home on a road trip and the number of gallons of gas used by the car. (association)
Positive association
Rational or Irrational:
8.1245783697283578...
Irrational (ellipses, non-repeating and does not terminate)
The number of hours you work (x) and the amount you get paid (y).
Positive correlation
You can place this on your axis, if you need to "fast forward" your axis to a section of higher numbers where you data starts.
What is a break in the graph?
A prefix meaning "2" in the phrase "bivariate data"
What is bi-?
The y-variable should be the ______ value and the x-variable should be the ______ value.
A) Independent, Dependent
B) Dependent, independent
C) First, Second
B) Dependent, independent
rate of change, constant rate of change, unit rate, slope, constant of proportionality, etc.
The number of hours spent sleeping and playing outside (x) and the number of hours spent studying (y).
Negative correlation
A scatterplot is used to analyze if there is a ___________ between two sets of data.
relationship / correlation
Related data presented on a graph or scatterplot
What is bivariate data?
The group of people that were surveyed from a larger set.
Sample OR Population
Sample
Solve.
0.5x + 3 = 5 - 1.5x
x = 1
The relationship between the number of jellyfish in the ocean (x) and the number of text messages you got last Friday (y).
No correlation
On a graph showing the relationship between salary and years of education, which variable would be labeled as the dependent variable?
The salary
What are the three types of association?
Positive, Negative and No association.
When drawing a line-of-best-fit/trend line, this guideline should be followed:
Draw a line where there is an equal number of points above and below the line
Solve.
6x + 5 - 2x = 3x + 26
x = 21