Yr8 maths

• The numbers known as the stems represent the first digit number
• The numbers known as the leaves represent the 2nd number
• 2 way tables are a way of displaying 2 sets of data for the same population
• 2 way tables show the frequency of 2 categories
• Discrete data only use certain values
• Continuous data can take any values
• A pie chart shows how much of something there is compared to other things
• Bar charts are good at showing trends over time or between different groups
• The mean is calculated by adding all the numbers up then dividing by the number of terms
• Scatter diagrams show if there's a relationship between two sets of numbers
• The median is found by putting the numbers in order, then finding the middle one (or average if it's an even amount)
• Outliers are extreme values which don't fit with the rest of the data
• The mode is the most common value
• Median is the middle number in an ordered list
• Range is the difference between the highest and lowest numbers
• To find the range, subtract the smallest from the largest
• The best fit line fits best with the data provided
• Correlation in scatter graphs can be weak or strong
• A positive correlation means that as one value increases so does the other
• A negative correlation means that as one value decreases so does the other
• If there are no points close to the trendline then it may not be accurate
• Volume is the amount of space that a substance occupies in a container or in a container's space.
• Capacity is how much liquid a container holds, measured in millilitres (ml) or litres (l).
• The volume of a cube is calculated by multiplying its length by width by height.
• We calculate the volume using the formula Length x Width x Height.
• The surface area is the total area of all the faces on the shape
• The HCF is the product of shared factors
• The HFC is the highest common factor
• The LCM is the lowest common multiple