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Ch 3 Re-Test: Quantitative Data Displays cloned 10/7/2020

Last updated over 4 years ago
24 questions
4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:

79, 80, 80, 80, 74, 80, 80, 79, 64, 78,

73, 78, 74, 45, 81, 48, 80, 82, 82, 70


Use your Ti-84 Calculator to create a histogram:
1. Enter your data into List 1 (Stat, Edit)
2. Open a statplot (2nd, y=, statplot1 on)
3. Choose histogram, frequency=1.
4. Zoom, 9

Describe the data distribution using CUSS & BS.
Choose all answers that apply below (there are four).
Use the actual list of data when describing the spread.

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

Use your Ti-84 Calculator to find the 5# summary:
1. Stat, Calc, 1-VarStats
2. Frequency: keep blank
3. Calculate.

List the 5# summary, separate each number by a comma, keep the decimals if shown.
Use the format: 3, 4, 5, 6, 7

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

Use your Ti-84 Calculator to find the mean and standard deviation:
1. Stat, Calc, 1-VarStats
2. Frequency: keep blank
3. Calculate.

Enter the mean and standard deviation that your calculator gives:
Round to three places past the decimal if necessary.

Separate the values by a comma. Ex. 24, 2.145

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

Using the histogram from #1, think about the shape, should you use the mean & standard deviation or the median & IQR to describe the center and spread of this data?
Why or why not?
Select two correct answers.

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

Using the 5 # summary, what is the IQR?
Interpret the IQR. (what does the IQR show?)
Select the correct answer for each question (you need to select two correct answers)

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

Using the 5 # summary and the IQR, calculate the lower and upper fences.
Use the formulas: Q1-1.5(IQR) Q3+1.5(IQR)

List them below, separated by a comma.
Round to two places past the decimal point.
Use the format: 34.3, 75.6

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

Using the fences calculated in #7, are there any outliers?
If so, list them.

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

If the value of 64 games were added to the data, would it be an outlier?
Yes or no?
Explain how you know.

4

During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He did this while playing in 280 fewer games than the previous record holder.
Here are the number of games Gretzky played during each season:
79, 80, 80, 80, 74, 80, 80, 79, 64, 78,
73, 78, 74, 45, 81, 48, 80, 82, 82, 70

Using the original set of data and the 5# summary calculated in #2, interpret the Q1 in this context.
Explain what it means.
Select the best answer.

4

15 students in a statistics class were asked how many pets they have.
Their responses are listed below.


1. How many students in the class had 2 pets?

2. What percent of the 15 students in the class had 2 pets?

Enter both answers separated by a comma.

4

Patients at a clinic were asked their age. The data is shown below in the histogram:



Using the histogram above,
1. How many patients were survey about their age?

2. Using the total, check how many patients were over 60 years old, calculate the percent that were over 60 years old.

Enter the numbers below: # patients, percent over 60 yrs
Ex. 12, 15%

7

All students in a physical education class completed a basketball free-throw shooting event and the lowest number of shots made was 17.
The next day a student who had just transferred into the school completed the event, making 6 shots, that same day the student who had made 17 withdrew from the school so her data is replaced with the 6 shots, keeping the number of data values the same.

Indicate whether adding the new student’s score to the rest of the data made each of these statistics increase, decrease, or roughly stay about the same:

Select the 'rose' to drag each of the statistics to the effect the new student's score will have on it.

  • Maximum
  • IQR
  • Minimum
  • Median
  • Range
  • Standard Deviation
  • Mean
  • Roughly stay the same
  • Decrease
  • Increase
4

The boxplot below displays the arm spans for 44 students.



The five-number summary for the data is Min: 143, Q1: 162, Median:168, Q3: 180, and Max: 202.

Which of the following is a true statement?

4

The boxplot below displays the number of cookie boxes sold by 24 Girl Scouts.

The five-number summary for the data is Min: 5, Q1: 8.5, Median: 12, Q3: 14, and Max: 20.

What percent of the 24 girl scouts sold at least 14 boxes of cookies?
(this means greater than 14 boxes)

4

The boxplot below displays the number of cookie boxes sold by 24 Girl Scouts.


The five-number summary for the data is Min: 5, Q1: 8.5, Median: 12, Q3: 14, and Max: 20.

1. What is the range of the data?
Record the range as a single number.

2. What is the IQR of the data?
Record the range as a single number.

4

Joe is interested in the prices of homes sold in his area.
He found a list of the selling prices of 50 homes for the past month.
Most of the homes sold for $100,000–$350,000, but there were some mobile homes that sold for less than $50,000.

Which of the following statements is true about the mean and median selling price for the 50 homes?

Hint: picture the shape of the data distribution.

4

Alex records the running time—the number of minutes a movie lasts from start to finish—of 50 popular movies. The distribution of times, in minutes, is displayed in the histogram below.

Which would be larger, the mean or the median?
Why?
Select the two correct answers below.

4

The stemplot below displays data for the number of snacks 37 school children grabbed at the after-school care center.


Observe the shape of the stemplot, do you predict the median or mean will be larger? Or will they be the same?
Select your answer and also the reason for your answer.
You should select two correct answers.

4

The stemplot below displays data for the number of snacks 37 school children grabbed at the after-school care center.


1. Give the range for the stemplot.

Calculate the range and give your answer as a single number.

4

The stemplot below displays data for the number of snacks 37 school children grabbed at the after-school care center.


How many children selected 21 snacks?
Use this information, and the additional information above, to calculate the percent of children that selected 21 snacks.

Calculate the percent of children that selected 21 snacks and enter it below.
Round your answer to one place past the decimal point.

4

Observe the shape of the histogram below carefully.


Which of the boxplots pictured below corresponds to the histogram?

2

Observe the shape of the histogram below carefully.


Which of the boxplots pictured below corresponds to the histogram?

4

Observe the shape of the histogram below carefully.


Which of the boxplots pictured below corresponds to the histogram?

2

Observe the shape of the histogram below carefully.


Which of the boxplots pictured below corresponds to the histogram?