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Copy of Chapter 1 Test (8/30/2024)

Last updated over 1 year ago
33 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

Jack would like to find the mean, median, and mode of different toolsets. The following are the prices he found.

$321, $175, $278, $221, $398, $287, $199

Mean: _________

Median: _________

Mode: ___________
1

Determine the mean of the tool sets Jack found.

1

Determine the median of the tool sets Jack found.

1

Determine the mode of the tool sets Jack found.

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

  • going to Disneyland
  • going to a restaurant for a birthday
  • rent/mortgage
  • concert tickets
  • car to travel to work
  • Medicine for heart disease
  • Water Bill
  • jewelry
  • Essential Expenses
  • Discretionary Expenses
1

Use the frequency table below.


How many people were in this survey?

Below are the prices of shoes Vanessa's mom found online. Determine the table value, the range, variance and 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.

Accountants earn the following incomes:

$78,000 $79,100 $104,300 $99,000 $198,000



Find the following measures:

Mean: _____________ Median: _____________
0.5

What is the mean? Round to the nearest dollar. (no decimals) Don't forget your dollar sign!

0.5

What is the median? Round to the nearest dollar. (no decimals) Don't forget your dollar sign!

1

What is a better representation of the accountant incomes, the mean or median? Explain your answer.

0.2

Find the frequency of a chore that took 3 minutes.

0.2

Find the frequency of a chore that took 4 minutes.

0.2

Find the frequency of a chore that took 7 minutes.

0.2

Find the frequency of a chore that took 9 minutes.

0.2

Find the frequency of a chore that took 14 minutes.

0.2

Find the frequency of a chore that took 23 minutes.

0.8

Find the percentile rank of chores that took 9 minutes. Round to the nearest tenth.

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

The tables below shows how many times 1 or more items were purchased.
1

What percentage of people purchased 3 and 4 items?

1

How many people chose 1, 2, or 3 items?