Recent activity by Jefferson

To add value to MathsGee Answers, you can now support those users that are helping you with their answers, questions, votes and comments. Simply click on their name and DONATE an amount to say "Thank you"

1 answer

answered Jun 23, 2020 in Data Science | 41 views

Calculate each of the following without the use of a calculator.

1 answer

answered Jun 23, 2020 in Data Science | 24 views

Calculate the following without the use of a calculator.

1 answer

answered Jun 23, 2020 in Data Science | 48 views

1 Calculate the standard deviation 2 The coefficient of variation

1 answer

answered Jun 23, 2020 in Data Science | 43 views

A customer care consultant recorded the number of enquiries from customers over a two week period.

1 answer

answered Jun 22, 2020 in Data Science | 662 views

All of the following are measures of central tendency except the:

1 answer

answered Jun 22, 2020 in Data Science | 101 views

When developing a frequency distribution, the class (group) intervals should be:

1 answer

answered Jun 22, 2020 in Data Science | 27 views

P(A ∪ B) = P(A) +P(B) - P(A ∩ B) represents the formula for the:

1 answer

answered Jun 22, 2020 in Data Science | 127 views

Events that have no sample space outcomes in common and therefore, cannot occur simultaneously are:

1 answer

answered Jun 22, 2020 in Data Science | 72 views

The _______ of two events X and Y is another event that consists of the sample space outcomes belonging to either event X or event Y or both event X and Y.

1 answer

answered Jun 22, 2020 in Data Science | 40 views

A(n) ____________ is the probability that one event will occur given that we know that another event already has occurred.

1 answer

answered Jun 22, 2020 in Data Science | 83 views

If two events are independent, we can _____ their probabilities to determine the intersection probability.

1 answer

answered Jun 22, 2020 in Data Science | 331 views

In which of the following are the two events A and B, always independent?

1 answer

answered Jun 22, 2020 in Data Science | 24 views

If P(A)>0 and P(B)>0 and events A and B are independent, then:

1 answer

answered Jun 22, 2020 in Data Science | 307 views

If events A and B are independent, then the probability of simultaneous occurrence of event A and event B can be found with:

1 answer

answered Jun 22, 2020 in Data Science | 21 views

The two types of quantitative variables are:

1 answer

answered Jun 22, 2020 in Data Science | 191 views

____________ and _____________ are used to describe qualitative (categorical) data.

1 answer

answered Jun 22, 2020 in Data Science | 189 views

The number of miles a truck is driven before it is overhauled is an example of a(n) _____________ variable.

1 answer

answered Jun 22, 2020 in Data Science | 582 views

A person's telephone area code is an example of a(n) _____________ variable.

1 answer

answered Jun 22, 2020 in Data Science | 40 views

A plot of the values of two variables is a _____ plot.

1 answer

answered Jun 22, 2020 in Data Science | 190 views

A(n) ______ is a graph of a cumulative distribution.

1 answer

answered Jun 22, 2020 in Data Science | 210 views

Which of the following graphs is for qualitative data?

2 answers

answered Jun 22, 2020 in Data Science | 69 views

A store buys pairs of pyjamas from the supplier for R80 and sells them for R120. Calculate the profit as a percentage of:

1 answer

answered Jun 22, 2020 in Data Science | 56 views

From a group of 496 students, every 49th student starting with the 3rd student is selected.

1 answer

answered Jun 20, 2020 in Data Science | 49 views

Show that the square root of the mean is not the same as the mean of the square roots.

1 answer

answered Jun 20, 2020 in Data Science | 30 views

Evaluate the 5 number summary for the box-and-whisker plot.

1 answer

answered Jun 20, 2020 in Data Science | 52 views

There were 2000 employees in all. Convert the data into a frequency form.

1 answer

answer edited Jun 20, 2020 in Data Science | 44 views

From the sale prices, calculate 1 The mean 2 Standard deviation

1 answer

answered Jun 20, 2020 in Mathematics | 85 views

The four-digit number $A55B$ is divisible by $36$. What is the sum of $A$ and $B$?

1 answer

answered Jun 20, 2020 in Data Science | 30 views

The average retail prices during the Christmas period of 2002 in Blantyre, selected at random are shown in the table below:

1 answer

answered Jun 20, 2020 in Data Science | 52 views

Calculate the mean deviation of the scores of Smith.

1 answer

answered Jun 20, 2020 in Mathematics | 145 views

What is Douglas’s favorite number?

1 answer

answered Jun 20, 2020 in Mathematics | 37 views

How much longer will it take the fourteen workers to finish the road?

1 answer

answered Jun 19, 2020 in Mathematics | 51 views

Determine the integral $\int \dfrac{e^x+\sec^2x}{e^x+\tan x} dx$

1 answer

answered Jun 19, 2020 in General Knowledge | 44 views

What is Midrand Innovative Learning Center?

1 answer

answered Jun 19, 2020 in Data Science | 34 views

Suppose you have the task of providing the commentary for a soccer match in which your favourite team is playing. Explain the concept of bias in this case.

1 answer

answered Jun 19, 2020 in Data Science | 44 views

How do I construct a frequency polygon?

1 answer

answered Jun 19, 2020 in Data Science | 24 views

Where do you use a histogram?

1 answer

answered Jun 19, 2020 in Data Science | 30 views

An ogive is also known as a.........graph.

1 answer

answered Jun 19, 2020 in Data Science | 83 views

Do you know Stratified sampling? Explain with an example.

1 answer

answered Jun 19, 2020 in Data Science | 58 views

Is there any difference between simple random and systematic sampling?

1 answer

answered Jun 19, 2020 in Data Science | 42 views

Draw a bar chart to represent the given information:

1 answer

answered Jun 19, 2020 in Data Science | 43 views

Draw a pie chart that illustrates the percentage of the total number of South Africans between 18 and 25 years that play soccer, rugby and tennis.

2 answers

answered Jun 18, 2020 in Mathematics | 39 views

The body mass (in kg) of each member of the Under-14 team is recorded below:

2 answers

answered Jun 18, 2020 in Mathematics | 33 views

A group of 250 learners stay in a school hostel.

1 answer

answered Jun 18, 2020 in Mathematics | 94 views

Mr and Mrs Yamamoto are tourists from Japan who came to South Africa on holiday during December 2006.

1 answer

answered Jun 18, 2020 in Mathematics | 42 views

The Yamamotos would like to donate money to fence the perimeter of the sports field.

1 answer

answered Jun 18, 2020 in Mathematics | 41 views

The Yamamotos donated R2 000 to buy fertiliser for the soccer field.

1 answer

answered Jun 18, 2020 in Mathematics | 34 views

The body mass (in kg) of each member of the Under-16 team is recorded below:

1 answer

answered Jun 18, 2020 in Mathematics | 51 views

Jabulani's contractors ordered bricks for the walls of the house.

1 answer

answered Jun 18, 2020 in Mathematics | 54 views

Jabulani employs Simelane Contractors to do the building ofhis house.