Answer the following questions.

The table shows the age at first marriage of women in some Sub – Saharan African countries.

Age at first marriage 2005
Botswana 27
Burkina Faso 19
Cameroon 20
Cote d'Ivoire 22
Ethiopia 21
Gambia 20
Kenya 21
Lesotho 21
Malawi 19
Mali 18
Mozambique 19
Niger 18
Nigeria 21
South Africa 28
Tanzania 20
Uganda 20
Zimbabwe 21

Calculate the mean age of women at first marriage in Sub – Saharan Africa. Round to the nearest whole number.

Calculate the modal age of woman at first marriage in Sub – Saharan Africa.

Calculate the median age of woman at first marriage in Sub – Saharan Africa.

Answer the following questions.

The table shows the fertility rate of women (number of children per woman) in some Sub – Saharan African countries.

Total fertility rate of females Number of children
Botswana 3
Cameroon 5
Cote d'Ivoire 5
Ethiopia 4
Gambia 6
Kenya 4
Lesotho 3
Malawi 5
Mali 7
Mozambique 5
Niger 8
Rwanda 4
Somalia 6
South Africa 2
Tanzania 5
Uganda 6

Calculate the mean fertility rate of women at first marriage in Sub – Saharan Africa. Round to the nearest whole number.

Calculate the modal fertility rate of women in Sub – Saharan Africa.

Calculate the median fertility rate of women in Sub – Saharan Africa.

Answer the following questions.

The table shows 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 2.4
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 mean September Monthly Arctic Sea Ice Coverage between:-

1. 1995 – 2005 (to 1d.p.)
2. 2006 – 2016 (to 1d.p.)

Calculate the modal September Monthly Arctic Sea Ice Coverage between:-

1. 1995 – 2005
2. 2006 – 2016

Calculate the median September Monthly Arctic Sea Ice Coverage between:-

1. 1995 – 2005
2. 2006 – 2016

Answer the following questions.

The table below shows the proportion of the population that has access to improved drinking water sources in some Sub – Saharan African countries.

Proportion of the population using improved drinking water sources in 2010 (%) Frequency
91 - 100 3
81 - 90 2
71 - 80 6
61 - 70 1
51 - 60 3
41 - 50 3
31 - 40 0
21 - 30 1

What is the modal class of countries in Sub – Sahar Africa that have access to improved water sources?