Directions: Answer the following question(s). 3.46, 3.42, 3.55, … · 2019. 1. 21. · Chapter...

1 TEACHER READS:

Read the question to yourself and select the best answer.

On Monday, the price of a gallon of gas at 20 different gas stations in New York was as follows: 3.39,3.46, 3.42, 3.55, 3.55, 3.55, 3.71, 3.64, 3.51, 3.75, 3.59, 3.66, 3.51, 3.67, 3.63, 3.45, 3.38, 3.59, 3.66, and3.57. Which histogram represents this distribution of gas prices?

A.

B.

C.

D.

Data Set Display (Teacher Edition) Assessment ID: ib.1262242

Directions: Answer the following question(s).

Illuminate Itembank™ Continue: Turn to the next page.Generated On November 5, 2017, 11:07 PM PST

Master ID: 170563 Revision: 1

Correct: BRationale:

A. Student(s) may have chosen this answer option because it is a uniform distribution, although it does notaccurately describe this data.

B. Correct answerC. Student(s) may have chosen this answer option because it is a symmetric distribution, although it does

not accurately describe this data.D. Student(s) may not have noticed that the data is unordered. Student(s) may have based their decision

on only the first few data values in the listStandards:

CCSS.Math.Content.HSS-ID.A.1




2 TEACHER READS:


Twenty babies were born in one week in the maternity ward of a hospital. The weight of each baby tothe nearest pound is listed below.

5, 5, 5, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 10, 10

Which of the following dot plots represents the distribution of the babies' weights that week?

A.

B.

C.

D.



A. Student(s) may not have counted all categories. Student(s) may have chosen this option afterrecognizing the first two counts are correct.

B. Correct answerC. Student(s) may have chosen this option because it is a symmetric distribution, although it does not

accurately reflect this data.D. Student(s) may have chosen this option because it is a uniform distribution, although that does not

accurately reflect this data.Standards:





3 TEACHER READS:


A farmer creates a maze with bales of hay. The data set below represents the number of minutes ittakes children of various ages to complete the maze.

11, 4, 24, 12, 14, 26, 4, 11, 14, 21, 6, 21

Which of the following histograms correctly displays this data set?

A.

B.

C.

D.


Correct: CRationale:

A. Student(s) may have plotted a bar of 1 for each interval for which there is at least one data value.B. Student(s) may have thought that all bars needed to be the same height and may have represented 12

values distributed equally among the 6 intervals.C. Correct answerD. Student(s) may have thought that all intervals needed to have a bar and may have added a bar of 1 for

the 15–20 minute interval.Standards:





4 TEACHER READS:





A student researches the average cost of electricity, in cents per kilowatt–hour, in the United Statessince 2000 and creates the scatter plot below.

Which of the following best models a linear function fitted to the data in the scatter plot?

A.

B.

C.

D.





Correct: DRationale:

A. Student(s) may have thought that a best–fit line was a horizontal line that expressed the average value.B. Student(s) may have correctly determined the slope of the best–fit line but may have thought that the

best–fit line needed to pass through the first data point.C. Student(s) may have thought that a best–fit line needed to be below as many points as possible.D. Correct answer

Standards:CCSS.Math.Content.HSS-ID.B.6CCSS.Math.Content.HSS-ID.B.6.c




5 TEACHER READS:


A student researches the number of miles in the U.S. highway system since 1990 and creates thescatter plot below. The student draws a line to fit a linear function for the data points on the scatterplot.

Which of the following statements describes the adequacy of the line drawn by the student?

A. The line drawn by thestudent represents anadequate fit as theline passes throughthe first plotted datapoint.

B. The line drawn by thestudent represents anadequate fit as theline shows the samelinear trend as thedata points.

C. The line drawn by thestudent does notrepresent anadequate fit as theline should be closerto more of the datapoints.

D. The line drawn by thestudent does notrepresent anadequate fit as theline should be belowall of the data points,not above.


Correct: CRationale:

A. Student(s) may have thought that the y–intercept of the best–fit line needed to represent an actual datapoint.

B. Student(s) may have thought that any line showing a positive linear association would be an adequatebest–fit line for the given data.

C. Correct answerD. Student(s) may have thought that a best–fit line should be below all the data points.

Standards:CCSS.Math.Content.HSS-ID.B.6CCSS.Math.Content.HSS-ID.B.6.c




6 TEACHER READS:


The number of math homework problems given each night for 18 nights is shown below.

8, 9, 9, 9, 10, 11, 11, 11, 11, 14, 14, 15, 15, 16, 17, 17, 17, 18

Which box plot correctly displays the given data?

A. B. C. D.



A. Student(s) may have added the median value of 12.5 into both halves of the data set when determiningthe lower and upper quartile values.

B. Correct answerC. Student(s) may have used the 9th term as the median (since 9 is half of 18) and may have found the

lower and upper quartiles by excluding this value.D. Student(s) may have used the most frequent value of 11 as the median and the next most frequent

values of 9 and 17 as the lower and upper quartiles.Standards:





7 TEACHER READS:

Read and complete the task that follows.

A teacher wants to create a histogram to show the test scores for each of his 23 students. Hisstudent's test scores are shown below.

38, 51, 59, 66, 66, 68, 71, 73, 74, 76, 79, 81,83, 83, 83, 85, 86, 88, 92, 94, 94, 95, 97

Part A:He decides to divide the data into 6 different classes. What is an appropriate width of each of thedata classes?

Part B:Create a histogram with 6 classes of data.

Master ID: 357722 Revision: 1Rubric: 3 Point(s)

3 The student shows thorough understanding of creating a histogram. The student found the correct answer in Part A and created acorrect histogram in Part B.Part A:10 units97 – 38/6 = 59/6 ≈ 10

Part B:

2 The student shows partial understanding of creating a histogram. The student found the correct answer in Part A and created apartially correct histogram in Part B (each of the classes is properly set up, but there was a mistake when determining thefrequencies).

1 The student shows limited understanding of creating a histogram. The student found the correct answer in Part A, but was unableto create a correct histogram in Part B.

0 The student shows little or no understanding of creating a histogram. The student was unable to find the correct answer in Part Aor create a correct histogram in Part B.

Standards:CCSS.Math.Content.HSS-ID.A.1




8 TEACHER READS:

Read and complete the task that follows.

At the veterinarian's office, Martez determined the weight of each of the dogs that visited throughoutthe day. Their weights (in pounds) are shown below.

42, 57, 72, 78, 58, 68, 53, 34, 27, 87, 46

Part A:Martez knows that to create a box plot, he first needs to determine the median of the data. What isthe median of the data?

Part B:Draw the box plot that represents this data.

Master ID: 357721 Revision: 1Rubric: 2 Point(s)

2 The student shows thorough understanding of calculating the median and creating a box plot. The student found the correctanswer in Part A or Part B (based on the answer in Part A).Part A:57 pounds

21, 34, 42, 46, 53, 57, 48, 68, 71, 78, 92

Part B:

1 The student shows thorough understanding of calculating the median and creating a box plot. The student found the correctanswer in Part A or Part B (based on the answer in Part A).

0 The student shows limited or no understanding of calculating the median and creating a box plot. The student was unable to findthe correct answer in Part A or Part B.

Standards:CCSS.Math.Content.HSS-ID.A.1



Illuminate Itembank™ Stop: You have finished the assessment.Generated On November 5, 2017, 11:07 PM PST

Chapter 3.08 and Chapter 3.09 Practice Answers (Pg. 4 of HW Packet)

Chapter 3.09 Categorical Data Practice Chapter 3.10 Scatter Plot Practice

Answers Answers (Pg. 5 of HW Packet)

Directions: Answer the following question(s). 3.46, 3.42, 3.55, … · 2019. 1. 21. · Chapter...

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