The table below shows the number of goals scored in 40 soccer matches during a certain season.19/11/2021 The table below shows the number of goals scored in 40 soccer matches during a certain season.
Calculate the mean number of goals scored per match. (3mks)Worked Solution
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
Form 2 Mathematics
The following data was obtained for the masses of certain animals.
Complete the histogram on the grid provided
answer
Form 3 Mathematics
A frequency distribution of marks obtained by 120 candidates is to be represented in a histogram. The table below shows the grouped marks. Frequencies for all the groups and also the area and height of the rectangle for the group 30 – 60 marks.
(a) (i) Complete the table
(ii) On the grid provided below, draw the histogram (b) (i) State the group in which the median mark lies (ii) A vertical line drawn through the median mark divides the total area of the histogram into two equal parts Using this information or otherwise, estimate the median mark
answers
Form 2 MathematicsThe marks obtained by 10 pupils in an English test were 15,14,13,12,P,16,11,13,12 and 17.The sum of the squares of the marks, ∑x = 21,794
Answer
Form 2 Mathematics
The frequency distribution table below shows the weekly salary (K£) paid to workers in a factory
On the grid provided draw a histogram to respect the information shown above
Answer*
Form 2 Mathematics | Topical Questions and Answers
The table below shows heights of 50 students
ANSWER
Form 2 Mathematics
Patients who attend a clinic in one week were grouped by age as shown in the table below:
Answer
Form 1 Mathematics
The number of people who attended an agricultural show in one day was 510 men, 1080 women and some children. When the information was represented on a pie chart, the combined angle for the men and children was 2160. Find the angle representing the children.
answer
 Six weeks after planting the height of bean plants were measured correct to the nearest centimeter. The frequency distribution is given in the table below.
answer
The following enrollment figures for twenty primary schools were collected.934 923 936 924 933 933 937 926 923 934 931 929 934 927 932 934 927 940
K.N.E.C Marking Scheme
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