QUESTION ONE
Data in the following table show the enrolment of form one student at mji mpya secondary school from 2006 to 2010. Carefully study them and answer the questions that follow
| year | 2006 | 2007 | 2008 | 2009 | 2010 |
| Number of students | 220 | 200 | 150 | 180 | 205 |
(a) Present the data by using a simple bar graph
(b) Comment on the trend of enrolment
(c) Explain the advantages of the methods used in (a) above
QUESTION TWO
State the difference between the following types of data
(a) Discrete and continuous
(b) Single and grouped
QUESTION THREE
Read carefully the hypothetical data presented below and then answer the questions that follow. Cash crops production in Tanzania in ‘000’ tons
| Year | Types of cash crops | ||
| coffee | cotton | tea | |
| 1990 | 200 | 100 | 300 |
| 1991 | 150 | 130 | 200 |
| 1992 | 120 | 100 | 100 |
(a) Represent data above using a compound bar graph
(b) How the compound bar graph is of value to you? Give three points
(c) Comment on the trend of production as observed from the graph
QUESTION FOUR
Read carefully the climatic data for station A presented in the table and answer the question that follow
| month | J | F | M | A | M | J | J | A | S | O | N | D |
| Temperature in 0C | 26.6 | 26.6 | 26.6 | 26.6 | 26.6 | 26.6 | 27.7 | 27.7 | 28.3 | 28.3 | 27.7 | 27.7 |
| Rainfall in mm | 233 | 228 | 244 | 215 | 118 | 91 | 36 | 36 | 51 | 104 | 140 | 196 |
I. Describe the climatic condition of station A
II. Name any two countries in the great lakes of East Africa that experience this type of climatic condition
III. Present the data graphically
QUESTION FIVE
Study the following data showing the production of Irish potatoes in thousands (‘000’) tonnes in three villages in Tanzania from 2000 to 2002 then answer the question that follows
| year | Potato production | ||
| sunga | mwalugulu | Mpera | |
| 2000 | 20 | 15 | 5 |
| 2001 | 40 | 15 | 10 |
| 2002 | 50 | 20 | 10 |
(a) Construct a compound bar graph to show the production of Irish potatoes in the three villages
(b) Give three advantages and two disadvantages of the compound bar graph
(c) Suggest any other three methods which could be used to present the data provided in the table
QUESTION SIX
Classify the nature of geographical data
II. The geography teacher of mtakuja secondary school obtained the following scores after marking the annual examinations of his students; 36,43,48,68,70,19,49,30,51,18,51,58,72,51,61,41,51,26
a) Find the median of the score
b) Calculate the arithmetic mean
c) Determine the mode of the score
III. Show the significance of the arithmetic mean in geographic data
QUESTION SEVEN
Carefully study the hypothetical data provided below showing the exports of crops from Tanzania. The exports of crops in tonnes
| Year | cloves | sisal | Cotton |
| 1990 | 4000 | 3500 | 7000 |
| 1991 | 2500 | 2000 | 4500 |
| 1992 | 3500 | 1500 | 6000 |
| 1993 | 6000 | 1000 | 8500 |
| 1994 | 6500 | 1500 | 9000 |
(a) Present the data using compound bar graph (b) Explain two advantages and disadvantages of compound bar graph
QUESTION EIGHT
(a) Explain the meaning of standard deviation
(b) Study the following data showing the age of primary school pupils at tumaini primary school and answer the question that follow; 15,8,7,6,12,5,14 and 13
I. Determine the range and median of the age of students
II. Calculate the standard deviation
QUESTION NINE
The table below shows agricultural production in Tanzania from 2000 to 2003 in thousands (‘000’) tons
| CROPS | 2000 | 2001 | 2002 | 2003 |
| MAIZE | 65 | 35 | 60 | 70 |
| TOBACCO | 25 | 30 | 20 | 25 |
| COFFEE | 50 | 60 | 45 | 45 |
(a) Present the data by using grouped bar graph (b) Comment on the nature of production
