Compare data and Scatter plot intro

Create a data set that has a mean of 10. The set should have 5 numbers in it.

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CCSS.6.SP.B.5C

Here are the means and standard deviations of yearly salaries for dental hygienists and helicopter pilots. Which data set has a greater standard deviation? (Circle one.)

• Dental hygienist

• Helicopter pilot

Here are the means and standard deviations of yearly salaries for dental hygienists and helicopter pilots. What does this data tell you about starting salaries of these jobs? SELECT ALL that are true based on this data

• Dental hygienists have a higher average salary but are less consistent. Most hygienists would fall between $81,000 and $111,000

• Dental hygienists make about $15,000 a year but have a very large deviation meaning lots of variation.

• Helicopter pilots have a slightly lower average of $81,241. However, they are more consistent because their standard deviation is a little lower.

• Helicopter pilots make an average of $81,241 and their median is $12,000.

• Helicopter pilots make about $12,000 per year but are over all happy

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CCSS.7.SP.B.4

Which data set has a HIGHER mean, and what does that tell you about these athletes?

• Skateboarders,

  that tells me that there is a lot of variation in whether you will break a bone or not in that sport

• Skateboarders,

  that tells me on average they break more bones than rock climbers

• Rock Climbers,

  that tells me that there is a lot of variation in whether you will break a bone or not in that sport

• Rock climbers,

  that tells me on average they break more bones than skateboarders

Tags

CCSS.7.SP.B.4

Which data set has a HIGHER standard deviation, and what does that tell you about these athletes?

• Skateboarders,

  that tells me that there is a lot of variation in whether you will break a bone or not in that sport

• Skateboarders,

  that tells me on average they break more bones than rock climbers

• Rock Climbers,

  that tells me that there is a lot of variation in whether you will break a bone or not in that sport

• Rock climbers,

  that tells me on average they break more bones than skateboarders

Inola says that since the standard deviations are similar, the temperature in Portland and Phoenix are also similar. What would you say to help Inola understand her mistake?

Tags

CCSS.7.SP.B.4

Based on this data, fill in the blanks below.

Based on the data shown it looks like ​ (a)   is over all the warmer city. I can tell this by looking at the ​ (b)   and seeing it is higher. However, if if you like a little bit more variety in the weather you should go to ​ (c)   I can tell that there is a little more variety by seeing that the ​ (d)   is higher.

• Phoenix
• mean
• Portland.
• standard deviation
• median
• histogram

Tags

CCSS.7.SP.B.4

Consider this data set: 2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 7.

If 7 changed to 70, what would happen to: The mean?

• Increase

• Decrease

• Stay the same

Consider this data set: 2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 7.

If 7 changed to 70, what would happen to: The standard deviation?

• Increase

• Decrease

• Stay the same

Consider this data set: 2, 3, 3, 4, 4, 4, 4, 5, 5, 6, 7.

If 7 changed to 70, what would happen to: The median?

• Increase

• Decrease

• Stay the same