Answer the following questions.

The table below shows the average river levels of the river Severn in Gloucester between February and December 2017.

Month Average level of River Severn (Gloucester) in metres
Feb-17 4.4
Mar-17 3.2
Apr-17 2.8
May-17 1.7
Jun-17 1.4
Jun-17 1.8
Jul-17 1.0
Aug-17 1.2
Oct-17 2.2
Nov-17 4.3
Dec-17 4.2

Calculate the range for the average level of the river Severn in Gloucester between February 2017 and December 2017.

Calculate the inter-quartile range for the average level of the river Severn in Gloucester between February 2017 and December 2017.

Calculate the quartile range for the average level of the river Severn in Gloucester between February 2017 and December 2017.

Answer the following questions.

The tables below show the Monthly Average Arctic Sea Ice for September over the last 20 years.

Year September Monthly Average Arctic Sea Ice (million square miles) 1995-2005
1995 24
1996 3.1
1997 2.6
1998 2.6
1999 2.4
2000 2.5
2001 2.6
2002 2.3
2003 2.4
2004 2.3
2005 1.6
Year September Monthly Average Arctic Sea Ice (million square miles) 2006-2016
2006 3.0
2007 1.7
2008 1.8
2009 2.1
2010 1.9
2011 1.8
2012 1.4
2013 2.1
2014 2.0
2015 1.8
2016 1.8

Calculate the range for September Monthly Arctic Sea Ice Coverage between:

  1. 1995 - 2005
  2. 2006 - 2016

Calculate the inter-quartile range for September Monthly Arctic Sea Ice Coverage between:-

  1. 1995 - 2005
  2. 2006 - 2016

Calculate the quartile range for September Monthly Arctic Sea Ice Coverage between:-

  1. 1995 - 2005
  2. 2006 - 2016

Answer the following questions.

The tables below show the Average annual temperature for Bangor and Cardiff.

Month Average Temperature - Bangor (℃)
Jan 6.2
Feb 5.9
Mar 7.0
Apr 9.0
May 11.6
Jun 14.2
Jul 16.1
Aug 16.1
Sep 14.4
Oct 11.6
Nov 8.8
Dec 6.5
Month Average Temperature - Cardiff (℃)
Jan 5.3
Feb 5.4
Mar 7.6
Apr 9.5
May 12.7
Jun 15.4
Jul 17.4
Aug 17.2
Sep 14.7
Oct 11.3
Nov 8.0
Dec 5.7

Calculate the range for the average annual temperature of:-

  1. Bangor
  2. Cardiff

Calculate the inter-quartile range for the average annual temperature of:-

  1. Bangor
  2. Cardiff

Calculate the quartile range or the average annual temperature of:-

  1. Bangor
  2. Cardiff