The cuboid has a volume of 4320 cm³. The dimensions of its base are 15 cm by 12 cm. Find the height.

(a)  

Find the perimeter of the sector. Use $$\pi=3.142$$ (correct to 1 d.p)

(a)  

Work out the range.

(a)  

Find the median,

(a)  

Calculate the mean.

(a)  

Write down the mode.

(a)  

Work out the range.

(a)  

Work out the median.

(a)  

Calculate the mean.

(a)  

Here are the numbers: 102, 80, 86, 84, 86

A number is removed from the list and the median and range is still the same.

What is the number?

(a)  

Find the mode.

(a)  

Find the median.

(a)  

Find the range.

(a)  

Find the median.

(a)  

Find the Q₁.

(a)  

Find the Q₃.

(a)  

Find the IQR.

(a)  

Calculate the estimate of the mean. (in 1 d.p)

(a)  

On a histogram, the height of the bar for the $$20<a\le30$$ interval is 6 cm.

Calculate the height of the bar $$35<a\le40$$ .

(a)  

The mean number of books is 4.28. Find the value of x.

(a)