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1.3-1.5 Quiz Review

Last updated 3 months ago
20 questions
Answer all the questions you are able to. Do the questions you know how to do first and then go back to the ones that were difficult. Each question is worth a different value.
1

1


Select all that apply to describe the association of this scatterplot. Choose two options

1

Drag each item to the correct description of the relationship.

  • Positive
  • Negative
  • None
1

Move the graphs to their appropriate description.

  • Item 1

  • Too High
  • Too Low
  • Just Right
Required
2

A scatter plot was constructed on the graph below and a line of best fit was drawn. What is the equation of this line of best fit?



3

Determine if the following are essential or discretionary expenses

  • concert tickets
  • jewelry
  • car to travel to work
  • going to Disneyland
  • Water Bill
  • rent/mortgage
  • going to a restaurant for a birthday
  • Medicine for heart disease
  • Essential Expenses
  • Discretionary Expenses
Below are the prices of the shoes Vanessa's mom found online. Determine the table value, the range, the variance, and the standard deviation.

1

Determine the mean price of shoes. Don't forget your dollar sign and 2 decimal places!

1

Determine the range of the prices. Dollar sign!!

1

Determine the variance.

1

Determine the standard deviation.

2

Select the correlation values that show a weak condition:
Hint: There are 3

4

Select the correlation values that show a strong condition:
Hint: there are 3

1

The correlation coefficient, r, is given for several different linear models for a data set. Sort the r values from best fit (top) to worst fit (bottom).

  1. -0.75
  2. -0.45
  3. -0.92
  4. 0.09
1

Determine if the situation is causation or correlation.

  • The amount of dark clouds increases and the grades on tests decrease.
  • the amount one lifts and the muscle created.
  • the faster the speed when you drive and the increase in skateboarders at the park.
  • Causation
  • Correlation
Domestic travel during summer vacation can get
pricey. The average cost per person for food, lodging, and airfare averages $540 per person with a standard deviation of $80.
1

Determine the z score value of someone who spent $480 per person for their vacation? Round two decimal places.

1

What percentage is represented by the family who spent $480 per person? Round one decimal place. Don't forget percentage sign.

1

Given that the variance of $8,720, what is the standard deviation?

1

The graph to the left shows the amount of money spent on Apps in billions. What is the line of best fit?

1

What is the regression value?

1

The graph to the left shows the amount of money spent on Apps in billions. Using extrapolation(algebra), determine how much money would be spent in 2030? Round to the nearest tenth in BILLIONS!!!