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3, 4, 5, 5, 5, 6,7 The range of these numbers is
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In order to find the median, the data must be sorted from least to greatest first.
true or false?
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You use this type of graph when comparing a change over the course of time
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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?
Answered by shoto aizawa
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
Answered by shoto aizawa
A student wants to know which type of of pizza high school students perfer. Which of the following options is a good, representative sample of the population?
2 points
Asking all the 10th graders in the school
Asking the school principal which type of pizza he perfers
Asking 20 students from each grade level
Asking the students who walk to school
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4, since the lowest number is 3 and the highest number is 7.
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True.
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A line graph is used when comparing a change over the course of time.
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A random sample of teachers would be one that is selected randomly from the entire population of teachers at the middle school. Therefore, any option that includes a random selection process would be a possible answer. Here are some examples:

- Option 1: Choose two teachers from each grade level. This is not a random sample, as it only includes teachers from specific grade levels and does not involve any random selection process.
- Option 2: Ask all teachers to fill out a survey about which supplies they need. This is not a random sample, as it includes all teachers and does not involve any random selection process.
- Option 3: Assign numbers to all teachers and use a random number generator to select 10 teachers. This is a random sample, as every teacher has an equal chance of being selected.
- Option 4: Choose the same number of teachers from each grade level as the percentage of total teachers in that grade level. This is not necessarily a random sample, as the percentage of teachers in each grade level may not accurately represent the distribution of teachers in the entire school.
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d. Surveying every fifth teacher according to the staff directory on the school website is a random sample, as it involves a random selection process.
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Asking 20 students from each grade level is a good, representative sample of the population.