Graphs, range, meridian and mean P.4

This unit is about Graphs, mean among others.

GRAPHS

 Reading and interpreting picture / pictographs

 

The pictograph below show the number of trees planted by three boys.

 

 

Okot TreesTreesTrees
Okello TreesTrees
Kintu TreesTreesTreesTreesTrees

Scale: Trees =        5 trees

 

 

  1. a) How many trees were planted by Kintu?

=        5 x 5

=        25 trees

  1. b) How many more trees were planted by Okot than Okello?

Okot  >        3 x 5  =        15 trees

 

Okello>       2 x 5  =        10 trees

 

More trees   >                 1 5 trees

1 0 trees

0 5 more trees

 

  1. c) Find the total number of trees planted.

=        10 x 5

=        50 trees

______________________________________________________________________

Drawing pictographs

Make a pictographs for the following information.

 

  • John has 12 balls
  • Mega has 15 balls
  • Sarah has 18 balls
  • Kamoga has 9 balls.

Scale: Balls =        3 balls

 

Solution:

 

John > 12 = 4m

3                3

 

Mega > 15 =        5 balls

3

 

Sarah          > 18 =        6  balls

3

 

Kamoga> 9 =        3 balls

3

 

NAMENUMBER OF BALLS
John BallsBallsBallsBalls
Mega BallsBallsBallsBallsBalls
Sarah BallsBallsBallsBallsBallsBalls
Kamoga BallsBallsBalls

 

______________________________________________________________________

BAR GRAPHS

Interpreting the scales of a bar graph

The bar graph below shows the daily attendance of P4 pupils for a week. Study it and answers the following questions.

Bar Graph

 

 

 

 

 

 

a) What is represented on the vertical axis?

b) What is represented on the horizontal axis?

c) How many pupils were present on Thursday?

d) Which days had the same number of attendance?

e) How many more pupils attended on Wednesday than Friday?

Tallies

Organizing data by tallying

Example 1

One 1

Two  11

Three  111

Five     1111

Ten     1111  1111

Twelve  1111  1111  11

 

Finding the mode

 

Mode is the term or the number that appears many times.

Example 1

Kennedy got the following marks in an exam 70,88,70,90,85.

Find his modal mark

MARKTALLY
7011
851
881
901

 

Therefore the mode is 70

 

Finding the range

Range is the difference between the highest and the smallest.

Maureen scored the following goal in the four netball matches

7,9,6,5.

Find the range.

9-5 =4

 

FINDING THE MEDIAN

 

Median is the middle term or number.

It’s got by arranging the terms or number in ascending or descending order.

example

Find the median of ;

43,74,49,90,10.

 

10,43.49,74,90.

 

There for  the median is 49

FINDING THE MEAN

Mean is total sum of given marks divided by the total number.

Example;

Find the mean of the following numbers.

3,5,4,6,2.

 

Mean    = 2+3+4+5+6

5

 

20

5

 

Attachments3

SEE ALLAdd a note
YOU
Add your Comment
 

DOWNLOAD YAAKA DN APP







X