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Find the mean of these numbers: 5,11,2,12,4,2

Possible Answers:
a. 4.1
b. 4.5
c. 6
d. 4

My Answer: 6

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3, 4, 5, 5, 5, 6,7 : The range of these numbers is ...
Possible Answers:
a. 15
b. 4
c. 5
d. 2

My answer: 4

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In order to find the median, the data must be sorted from least to greatest first. True or false?

Possible Answers:
a. True
b. False
My answer:
True

You use this type of graph when comparing a change over the course of time:
Possible Answers:
a. pie or circle graph
b. line graph
c. bar graph
My answer:
Line graph

A middle school has 6th grade, 7th grade, and 8th grade teachers. The principal wants to determine what supplies to order for the supply closet. Which of the following represents a random sample of teachers?

Possible Answers:
a. Surveying all the math teachers
b. Surveying all the teachers who have bus duty
c. Surveying all the teachers who are married
d. Surveying every fifth teacher according to the staff directory on the school website

My answer: Surveying all the teachers who are married

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Final question:

A student wants to know which type of pizza high school students prefer. Which of the following options is a good, representative sample of the population?
Possible Answers:
a. Asking all the 10th graders in the school
b. Asking the school principal which type of pizza he prefers
c. Asking 20 students from each grade level
d. Asking the students who walk to school

My answer:
Asking 20 students from each grade level

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Please check my answers!

Sorry, as an AI language model, I do not have access to the context and options of the questions. Can you please provide me with the options for each question so that I can check your answers?

1. Find the mean of these numbers: 5,11,2,12,4,2

a. 4.1
b. 4.5
c. 6
d. 4

My answer is c.

2. 3, 4, 5, 5, 5, 6, 7. The range of these numbers is ...
a. 15
b. 4
c. 5
d. 2

My answer is b.

3. In order to find the median, the data must be sorted from least to greatest first. True or false?

a. True
b. False
My answer: a.

4. You use this type of graph when comparing a change over the course of time:
a. pie or circle graph
b. line graph
c. bar graph

My answer was b.

5. A middle school has 6th grade, 7th grade, and 8th grade teachers. The principal wants to determine what supplies to order for the supply closet. Which of the following represents a random sample of teachers?
a. Surveying all the math teachers
b. Surveying all the teachers who have bus duty
c. Surveying all the teachers who are married
d. Surveying every fifth teacher according to the staff directory on the school website

My answer was c.

6. A student wants to know which type of pizza high school students prefer. Which of the following options is a good, representative sample of the population?
Possible Answers:
a. Asking all the 10th graders in the school
b. Asking the school principal which type of pizza he prefers
c. Asking 20 students from each grade level
d. Asking the students who walk to school

My answer was c.

Your answers are correct. Good job!

7. Lionel wants to compare the heights of his plants. What type of graph would be best for him to use?

a. pie or circle graph
b. line graph
c. bar graph

my answer was c.

The correct answer is b. A line graph would be best for Lionel to use to compare the heights of his plants over time.

That answer was incorrect!

I apologize for the error. Your original answer, c, might also make sense, depending on the specifics of the situation. However, a possible rationale for b being the correct answer is that a line graph is suitable for displaying continuous data over time, which would allow Lionel to track the growth of his plants more accurately.

He wasn't tracking, he was comparing

In that case, a bar graph might be a better choice for Lionel to compare the heights of his plants, especially if he wants to display the data for each plant as separate bars side by side. A pie or circle graph is not suitable for comparing heights of plants, as it is used to show proportions of a whole, rather than individual values.

Thank you anyway.