Sequences, correlation, prediction, causation

Complete the following arithmetic sequence. □, □, 4, 1, □

• 4; 1; 4

• 9; 5; 0

• 10; 7; -2

• 16; 8; 1/4

Complete the following geometric sequence. □, □, 8, 16, □

• 1/8; 1; 128

• 1/2; 2; 64

• -2; 4; -32

• 2; 4; 32

• 5, 3, 1, -1, -3

• 5, 8, 9, 8, 5

• 7, 5, 3, 1, -1

• 9, 11, 13, 15, 17

• 3, -6, 12, -24

• 3, 6, 12, 24

• 0, -6, 12, -24

• 1, -6, 6, -6

• an = -2n + 4

• an = -4n + 2

• an = 2n - 4

• an = 4n - 2

For the arithmetic sequence 35, 32, 29, 26, ..., determine tn.

• 32 + 3n

• 35 - 3n

• 38 - 3n

• 38 + 3n

A teacher made the following scatterplot to show the scores her students received on an exam as they relate to the number of hours they studied for the exam. Which of the following best describes the correlation for the data?

• Positive correlation

• Nonlinear correlation

• Negative correlation

• No correlation

Which of the following situations does not show causation?

• When the wolf population in a national park increases, the deer population decreases.

• When the number of pot holes increases, the number of daily traffic accidents increases.

• When there are fewer novels assigned in class, the students' reading scores decrease.

• When the average ticket price to a concert increases, the artist plays more songs.

Which of the following situations does not show causation?

• When the amount of sugar in a cake recipe is increased, there are more calories per slice of cake.

• When the number of houses in a neighborhood increases, the wild animal population decreases.

• When there is more sugar in a student's diet, the student scores better on a test.

• When there are fewer traffic signs on a road, the number of traffic accidents increases.