contestada

1. What does it mean to say that a country’s land area is positively correlated with its population?
A.The larger the land area of a country, the higher its population tends to be.

B.The smaller the land area of a country, the higher its population tends to be.

C.There is no relationship between a country’s land area and its population.

D.A larger land area automatically means a higher population.

2. What is an outlier?
A. a data point that perfectly embodies the relationship between two variables

B.a data point that falls outside of a general trend on a graph

C.a way of determining how two variables are related to each other

D.a data point that does not fit into a bar graph

3. What is a trend line on a scatter plot?
A.a visual representation of the relationship between two variables

B.a line connecting only the highest and lowest values on a graph

C.a line connecting all of the data points on a scatter plot

D.any line of data on a graph

Respuesta :

For 1.
Positive correlation means if you plot a country's population and land size on a graph. There would be a linear regression line that's sloping upwards. 

Since it's a scatterplot, there will be some that fall out of the line, but most of them should be on the line.

It's  (A)

For 2.
An outlier is a datapoint that's far, FAR away from the others, so it's (B)

For 3. (A), it's a single line-of-best fit that runs through the middle of the cluster of data points.
cathy37
It is A I believe it the most sense

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