Form 4 Mathematics
The heights of 40 athletes in a county athletics competition were as shown in the table below
(a) Find the value of X.
(b) State the modal class. (c) Calculate: (i) The mean height of the athletes; (ii) The median height, correct to 1 decimal place,of the athletes
answers
Form 2 Mathematics
The masses, in kilograms, of patients who attended a clinic on a certain day were recorded follows.
(a) Starting with the class 35 — 39, make a frequency distribution table for the data.
(b) Calculate: (i) the mean mass; (ii)the median mass (c) On the grid provided below draw a histogram to represent the data
answers
Form 2 Mathematics
The masses in kilograms of 20 bags of maize were:
90, 94, 96, 98, 99, 102, 105, 91, 102, 99, 105, 94, 99, 90, 94, 99, 98, 96, 102 and 105. Using an assumed mean of 96 kg, calculate the mean mass, per bag of the maize.
ANSWER
Form 2 Mathematics
The production of milk, in litres, of 14 cows on a certain day was recorded as follows:
22, 26, 15, 19, 20, 16,27, 15, 19, 22, 21, 20, 22 and 28. Determine: (a) the mode; (b) the median.
answers
Form 2 Mathematics
A students obtained the following marks in four tests during a school term: 60%, 75%, 48% and 66%. The tests were weighted as follows: 2,1, 4 and 3 respectively.
Calculate the students weighed mean mark of the tests
Answer
Form 2 Mathematics
The marks scored by a group of students in a test were recorded as shown in the table below
On the grid provided, and on the same axes, represent the above data using
a) a histogram; b) a frequency polygon
answers
Form 3 Mathematics
The table below shows the frequency distribution of mks scored by students in a test.
Determine the median mark correct to 2 s.f.
answers
Form 2 Mathematics
The lengths, in cm, of pencils used by pupils in a standard one class on a certain day were recorded as follows.
(a) Using a class width of 3, and starting with the shortest length of the pencils, make a frequency distribution table for the data.
(b) Calculate: (i) The mean length of the pencils (ii) The percentage of pencils that were longer than 8cm but shorter than 15cm. (c) On the grid provided, draw a frequency polygon for the data
answers
Form 3 Mathematics
The table below shows the number of goals scored by a football team in 20 matches
Find:
ANSWER
Form 2 Mathematics
The masses in kilograms of 20 bags of maize were;
90, 94, 96, 98, 99, 102, 105, 91, 102, 99, 105, 94, 99, 90, 94, 99, 98, 96, 102 and 105. Using an assumed mean of 96kg, calculate the mean mass, per bag, of the maize.
answer
Form 2 Mathematics
The table below shows the height, measured to the nearest cm, of 101 pawpaw trees.
(a) State the modal class.
(b) Calculate to 2 decimal places: (i) the mean height; (ii) the difference between the median height and the mean height.
answers
Form 2 Mathematics
The frequency table below shows the daily wages paid to casual workers by a certain company.
(a) Draw a histogram to represent the above information.
(b) (i) State the class in which the median wage lies. (ii) Draw a vertical line, in the histogram, showing where the median wage lies. (c) Using the histogram, determine the number of workers who earn sh 450 or less per day.
answers
Form 2 Mathematics
The masses of people during a clinic session were recorded as shown in the table below.
Calculate the mean mass.
answer
Form 2 Mathematics
The frequency distribution table below represents the number of kilograms of meat sold in a butchery.
(a) State the modal frequency
(b)Calculate the mean mass. (c)Calculate the median mass.
answer
Form 2 Mathematics
The histogram shown below represents the distribution of heights of seedlings of a certain plant.
The shaded area in the histogram represents 20 seedlings. Calculate the percentage number of seedlings with heights of at least 23 cm but less than 27 cm.
answer
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AuthorMaurice A Nyamoti is a Mathematics/ Computer Teacher and has passion to assist students improve grades RSS_FEED
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