Question

question 2 (1 point)
listen
which of the following is true about graphical data?
a) all graphs should start at the origin.
b) the x - values of a graph can be estimated based on the y - values.
c) all data on a graph should be linear.
d) an equation of the best - fit line of data can be used to estimate untested values.
e) graphical correlations always have a positive relationship.

Explanation:

• Option a: Not all graphs start at the origin, e.g., graphs of data with non - zero minimum values.
• Option b: In most cases, x and y - values are independent variables in a graph, and one is not estimated from the other in a general sense without a known relationship.
• Option c: Graphical data can be non - linear, such as exponential or quadratic data.
• Option d: The equation of the best - fit line (in linear regression) is used to predict or estimate untested values, which is a common practice in data analysis.
• Option e: Graphical correlations can be positive, negative, or have no correlation at all.

Answer:

d) An equation of the best - fit line of data can be used to estimate untested values.