Little Stats Test :P

The pie chart shows the colours of 32 beads. How many green beads are there?

• 12
• 24
• 32
• 8
• 4

Paul has a beach at the end of her road. He wants to estimate the number of jellyfish at this beach. One day, he captures 50 jellyfish and marks them ethically. The next day he captures 75 and counts how many have been previously marked. What has Paul done wrong that makes the experiment void?

• He has not has more than two people do it

• He has done it in an environment that means the jelly fish can migrate

• He has counted other animals instead of jelly fish

• He has not done this experiment 3 times to get an average mean

How do you estimate a median in a data set?

• Add the upper and lower bound of it and divide by two
  

• Tele the higher bound
  
  
  
  

• Take the low bound

• None of the above

Last year, Theeran’s pizza business averaged £27,000 income per month. This year, sales were up by 36% over the year. Calculate the average takings per month for this year.

• £36,720

• £37,620

• £320,720

• £306,720

In Theeran’s exam his final percentage is worked out using weighted averages. Paper 1 has a weight of 40. Paper 2 has a weight of 10. Paper 3 has a weight of 30. Paper 4 has a weight of 20

He scored these marks: Paper 1:73%; Paper 2:97%.; Paper 3:89%; Paper 4:100%

Work out Theeran’s final marks.

• 86.5%

• 85.5%

• 84.5%

• 85.6%

1. What is the mean 

frequency? 

• 11.11

• 11.12

• 11.01

• 10.11

Which is correct? 3468 to 2 significant figures

• • 3460

• • 3400

• • 3500

• • 3300

Which average is non numerical?

• • Mean

• • Range

• • Mode

• • Median

Truncate 69269 to 4 significant figures. Which is correct?

• • 69230

• • 69270

• • 69271

• • 69260

What skew does a line graph if the equation of the line is y = 3x + 0?

• • Strong negative

• • Negative

• • Weak Positive 

• • Positive

• • Strong positive