Module 10/Module 11 Quiz

Mrs. Smith wants to find the average height of all her students in her classes. She decides to use the first 5 people who walk in the door. Is this a good representative sample?

• Yes
• No

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Bob asked 8 band members and found that 3 members play more than one instrument. Use his results to predict how many of 152 band members play more than one instrument.

• 3/8
• 405
• 57
• 60

Tags

CCSS.7.RP.A.3

The dot plots show the number of hours students spent last week on social media sites.        
Which of the following is NOT an inference that can be made about the two populations?

•      Males and females both spend a median of 7 hours a week on social media sites             
• A.  Females typically spend less time than males on social media sites.
• The range for males is greater than the range for females
• The interquartile range for males is 5 hours. 

A biology student is studying two species of endangered parrots and their wingspan. Which of the following is a valid comparison of the two samples?

• The range of the Hyacinth Macaw Sample is 5 inches greater than the range of the Kakapo Sample.
• A.  The IQR for both samples is the same. 
• Both studies measured 30 birds.
• The median wingspan of the Hyacinth Macaw Sample is 10 inches longer than the median of the Kakapo Sample.

Based on the information in the box plots, which statement about the time spent exercising outside appears to be true? 

• The median amount of time the first class spent exercising was greater than the median amount of time the second class spent exercising.
• The range for the second class was 15 minutes more than the range for the first class.
• The interquartile range for the first class was more than the interquartile range for the second class.
• A.  The minimum amount of time the second class spent exercising was greater than the minimum amount of time the first class spent exercising.

Find the Mean Absolute Deviation:  10, 9, 3, 8, 10.  The Mean is 8

• 3
• 5
• 1
• 2

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the first step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean
• Find the mean of the distances
• Find the mean of the data

Tags

CCSS.6.NS.C.7

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the second step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean
• Find the mean of the distances
• Find the mean of the data

Tags

CCSS.6.NS.C.7

CCSS.6.SP.B.5

What is the third step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean
• Find the mean of the distances
• Find the mean of the data

Tags

CCSS.6.SP.B.5

_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.

• Sample
• Population
• Random Sample
• Quartile