Yr 8 Revision

Sample survey to find the best Year 8 teacher, would involve:

• Interviewing Raf

• Interviewing 8A

• Interviewing Hume

• Interviewing Year 8's

Which one of these is an example of sample bias?

• Answering a question because you like the person asking it

• Choosing to only survey a person because you like them

• Choosing to not survey someone because you like them

• Surveying everyone

Which one is the outlier?

• Superman

• Spiderman

• Batman

• Wonder Woman

What reason could affect the accuracy of gathered data causing it to be favourable or unfavourable?

A taxi company charges a fixed cost for using the taxi, plus a cost per kilometre travelled.

HOW MUCH IS THE FIXED COST OF THE TAXI FARE?

• $4

• $3

• 2km

• 0km

• $0

What must you do in order to correctly solve for the median?

• Divide the total sum by the total amount of data

• Rearrange from Largest to smallest

• Make sure the data is mixed to ensure it is random

• None of the above

Which days sold at least 5 boxes of donuts?

• Wednesday Friday

• Monday Thursday

• Monday Wednesday Friday

• Monday Wednesday Thursday Friday

A collects data from the entire population

To find the class interval, you have to first

• Find the range of the data set

• Rearrange the data set from largest to smallest

• Work out the Mean,median and mode of the data set

• Ask the class what the interval is

Select the things you MUST have when drawing statistical graphs

• Labelled Axis

• Title

• Consistent Scale

• The mean, median and mode