Compare Data

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

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

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?

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

What is the correlation for the following Scatter Plot.

• Weak Positive

• No Correlation

• Strong Negative

• Weak Negative

• Strong Positive

Which store is likely to have the shampoo with the highest price?

• DesGoods

• DesMarket

What type of association does this scatter plot show?

• positive linear association

• negative linear association

• no association

• nonlinear association

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump

• negative: the less you run the less distance of your jump

• positive: the further your running start the less your distance

Use the dot plots to compare the number of raffle tickets sold by boys and girls during a school fundraiser. Which plot has an outlier?

• Girls

• Boys

• both plots

• neither plot