Unit 8 Review

What is the Sum formula?

• Sum( )

• Sum( )=

• =Sum( )

• =( )Sum

When starting a formula what is the first thing you type in the cell?

• +

• -

• %

• =

The name for a part of a business that is bought and sold on the stock market is:

• Part
• Marker
• Stocker
• Share

What is the stock market?

• A type of farmers market where people buy and sell food.
• A place where parts of businesses are bought and sold.
• A special type of grocery store that sells stocks.
• A type of bank that gives out loans to new businesses.

Find the equation of the line of best fit for the given data

• y = 4.19 + 163.41x
• y = 4.19 - 163.41x
• y =163.41 - 4.19x
• y = -163.41+ 4.19x
  

Students in a group of chess teams submitted data about hours of team practice and the number of matches the team won.  The graph shows the results of the data.  Based on the linear regression equation y = 3.14x + 3.52, if a team practices 4.5 hours per week next year, which is the best prediction of the number of chess matches a team could expect to win?  

• about 24

• about 12

• about 8

• about 18

Determine the quadratic regression equation.

• y = -.05x - 3.26

• y = 0.95x² + 2.08x + 0.75

Use cubic regression equation to predict the number of organisms after 20 hours.

• 381

• 359

• 502

• 464

Use the linear regression equation to predict the temperature after 15 minutes.

• 100

• 92

• 77

• 64

percent change equals

• change/original
• (old-new)/old times 100
• (new-old)/old  times 100
• old/(new-old) times 100