Given a probability mass function $P(X=i)$ with outcomes $i \in \{0,1,2,\ldots 8\}$, find the expectation $E$ and $P(X \gt E)$.

Fill in a frequency table for grouped data, then estimate the mean and identify the modal class.

Simple probability question. Counting number of occurences of an event in a sample space with given size and finding the probability of the event.

Finding probabilities from a survey giving a table of data on the alcohol consumption of males. This can be easily adapted to data from other types of surveys.

The human resources department of a large finance company is attempting to determine if an employee’s performance is influenced by their undergraduate degree subject. Personnel ratings are used to judge performance and the task is to use expected frequencies and the chi-squared statistic to test the null hypothesis that there is no association.

Determine the optimal frequency and size of orders given information about demand and prices.

Calculate relative frequencies in a variety of scenarios.

Present some given data in a frequency table.

Example showing how to calculate the probability of A or B using the law $p(A \;\textrm{or}\; B)=p(A)+p(B)-p(A\;\textrm{and}\;B)$. 

Easily adapted to other applications.

Present some given data in a frequency table.

Fill in a frequency table for grouped data, then estimate the mean and identify the modal class.

Given a table of data, calculate the mean, mode and median, and complete a frequency table.

Finding probabilities from a survey giving a table of data on the alcohol consumption of males. This can be easily adapted to data from other types of surveys.

Simple probability question. Counting number of occurences of an event in a sample space with given size and finding the probability of the event.

No description given

No description given

The human resources department of a large finance company is attempting to determine if an employee’s performance is influenced by their undergraduate degree subject. Personnel ratings are used to judge performance and the task is to use expected frequencies and the chi-squared statistic to test the null hypothesis that there is no association.

Given a table of the number of days in which sales were between £x1000 and £(x+1)1000 find the relative percentage frequencies of these volume of sales.

rebelmaths

rebelmaths

Scores  in 20 games and frequency given -- calculate mean.

rebelmaths

Scores (including negatives)  in 20 games and frequency given -- calculate mean.

rebelmaths

rebelmaths

Stem and leaf, summation notation, cumulative frequency, relative cumulative frequency.

rebelmaths

rebel

Given a table of data, calculate the mean, mode and median, and complete a frequency table.

Given a table of data, calculate the mean, mode and median, and complete a frequency table.

Calculate relative frequencies in a variety of scenarios.

Calculate relative frequencies in a variety of scenarios.

Given a table of data, complete a frequency distribution table and use it to calculate the mean, mode, median and range.