Stem And Leaf Graphs

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| By Joel Dodd

Joel Dodd

Community Contributor

Quizzes Created: 26 | Total Attempts: 197,688

Questions: 13 | Attempts: 2,409 | Updated: Mar 21, 2023

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Assesses and reinforces the student's understanding of stem and leaf plots, and how to interpret the statistics displayed.
Lesson to be found on www. Paradigmlost. Info/mathvideo

Questions and Answers

1.

What is the mode of this data set?
2.

What is the lowest pulse rate after exercise?
- A.
  
  92
- B.
  
  9
- C.
  
  59
Correct Answer
C. 59

Explanation
After exercise, the pulse rate tends to decrease as the body recovers from the physical activity. A lower pulse rate indicates that the heart is functioning efficiently and pumping blood effectively. Therefore, 59 is the lowest pulse rate after exercise among the given options.

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4
0
3.

What is the highest pulse rate before exercise?
- A.
  
  79
- B.
  
  76
- C.
  
  92
Correct Answer
A. 79

Explanation
The highest pulse rate before exercise is 79. This means that before engaging in physical activity, the person's heart rate reached a maximum of 79 beats per minute.

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2
2
4.

What is the range of the students' heights?
- A.
  
  6-11 cm
- B.
  
  0-9 cm
- C.
  
  86-111 cm
Correct Answer
C. 86-111 cm

Explanation
The range of the students' heights is 86-111 cm. This means that the shortest student is 86 cm tall and the tallest student is 111 cm tall.

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0
7
5.

What range does most of the childrens' heights lie in?
- A.
  
  90-100 cm
- B.
  
  91-99 cm
- C.
  
  9-10 cm
Correct Answer
A. 90-100 cm

Explanation
Most of the children's heights lie in the range of 90-100 cm. This suggests that the majority of children are within this height range, indicating a common height distribution among children.

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3
7
6.

How many students were graded a C?
- A.
  
  5
- B.
  
  86441
- C.
  
  4
Correct Answer
C. 4

Explanation
The answer is 4 because the question asks how many students were graded a C, and the number 4 is the only option that represents a quantity of students. The other options, 5 and 86441, do not make sense in the context of the question.

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5
4
7.

WHat was the median value for class b?
- A.
  
  72
- B.
  
  94
- C.
  
  60
Correct Answer
A. 72

Explanation
The median value for class B is 72. This means that when all the values in class B are arranged in ascending order, the middle value is 72. In other words, 72 is the value that separates the lower half of the values from the upper half, with an equal number of values on either side.

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0
5
8.

Mean Weights (in pounds) According to this data, non-smokers are generally heavier than smokers: True or False?
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
According to the given data, the statement that non-smokers are generally heavier than smokers is false.

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0
1
9.

How many students scored higher than 75%
- A.
  
  12
- B.
  
  8
- C.
  
  18
Correct Answer
C. 18

Explanation
The answer is 18 because it is stated that there are 18 students who scored higher than 75%.

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10.

WHat was the median arm span?
- A.
  
  9 cm
- B.
  
  139 cm
- C.
  
  13 cm
Correct Answer
B. 139 cm

Explanation
The median arm span refers to the middle value when all the arm spans are arranged in ascending order. Since the given options are 9 cm, 139 cm, and 13 cm, the median arm span would be the middle value, which is 139 cm.

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2
1
11.

what was the heaviest weight recorded?

Correct Answer
103 kg
103kg
103

Explanation
The heaviest weight recorded is 103 kg, as stated in all three options.

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4
12.

What was the mode for the data set?

Correct Answer
26

Explanation
The mode for the data set is 26. This means that 26 is the value that appears most frequently in the data set.

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4
13.

What was the median number of birds visiting the feeder each day?

Correct Answer
25

Explanation
The median number of birds visiting the feeder each day is 25. This means that when all the daily bird counts are arranged in ascending order, the middle value is 25. This indicates that there are an equal number of days where the bird count is higher and lower than 25.

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4