Question 11 Mark
The final marks in mathematics of $30$ students are as follows:
$53, 61, 48, 60, 78, 68, 55, 100, 67, 90$
$75, 88, 77, 37, 84, 58, 60, 48, 62, 56$
$44, 58, 52, 64, 98, 59, 70, 39, 50, 60$
What is the range?
AnswerRange = highest score - lowest score $= 100 - 37 = 63$
View full question & answer→Question 21 Mark
Define the following terms: Frequency distribution.
AnswerA frequency distribution is an arrangement of instances in which a variable takes each of its possible values. A frequency distribution depicts a summarized grouping of data divided into mutually exclusive classes and the number of occurrences in those classes.
View full question & answer→Question 31 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ How many babies were born on that day?
AnswerWe can count the number of babies born on that particular day by counting the number of observations. Therefore, number of babies born on that day $= 15.$
View full question & answer→Question 41 Mark
Define the following terms: Frequency of an observation.
AnswerNumber of times an observation has occurred in a given data.
View full question & answer→Question 51 Mark
The final marks in mathematics of $30$ students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ Which observations between $50$ and $60$ have not actually appeared?
AnswerThe observation $51, 54$ and $57$ have not appeared in the data range of $50-60.$
View full question & answer→Question 61 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ How many babies weigh more than $2.8\ kg$?
AnswerBabies which weigh $2.9, 2.9, 3.0$ and $3.1\ kg$ are the ones to weigh more than $2.8\ kg.$
View full question & answer→Question 71 Mark
Define the following terms: Observation.
AnswerObservation is the active acquisition of information from a primary source.
View full question & answer→Question 81 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ How many babies weigh $2.8\ kg$?
AnswerNumber of babies weighing $2.8\ kg = 2$
View full question & answer→Question 91 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ Determine the range.
AnswerRange = Highest weight - lowest weight $= 3.1\ kg - 2.1\ kg = 1.0\ kg$
View full question & answer→Question 101 Mark
The final marks in mathematics of 30 students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ What is the lowest score?
AnswerThe above data shows $37$ as the lowest score
View full question & answer→Question 111 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ Rearrange the weights in descending order.
AnswerArranging the weights of the newborn babies in the descending order, we get, $3.1, 3.0, 2.9, 2.9, 2.8, 2.8, 2.7, 2.6, 2.5, 2.5, 2.4, 2.3, 2.2, 2.1,$
View full question & answer→Question 121 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows:
$2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$
Determine the highest weight.
AnswerIn a descending order, the first number is always the highest.
Therefore, highest weight $= 3.1\ kg.$
View full question & answer→Question 131 Mark
Define the following terms: Data.
AnswerA collection of facts such as values measurements are called data.
View full question & answer→Question 141 Mark
The final marks in mathematics of 30 students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ What is the highest score?
AnswerFrom the given data we can see that the highest score is $100.$
View full question & answer→Question 151 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ How many babies weigh below $2.5 \ kg$?
AnswerBabies which weigh $2.1, 2.2, 2.3$ and $2.4\ kg$ are the ones to weigh less than $2.5\ kg.$
View full question & answer→Question 161 Mark
The weights of new born babies (in kg) in a hospital on a particular day are as follows: $2.3, 2.2, 2.1, 2.7, 2.6, 3.0, 2.5, 2.9, 2.8, 3.1, 2.5, 2.8, 2.7, 2.9, 2.4$ Determine the lowest weight.
AnswerIn an descending order, the last number is always the lowest Therefore, lowest weight $= 2.1\ kg$
View full question & answer→Question 171 Mark
The final marks in mathematics of $30$ students are as follows: $53, 61, 48, 60, 78, 68, 55, 100, 67, 90 75, 88, 77, 37, 84, 58, 60, 48, 62, 56 44, 58, 52, 64, 98, 59, 70, 39, 50, 60$ How many have scored less than $50$?
AnswerStudents who have scored $37, 39, 44, 48$ and $48$ are the ones to score less than $50$ Therefore number of students who got less than $50 = 5$
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