Applications of Math

• Pert Charts are good to show?

  A clear critical path

  the order of activities
• Gantt charts are good for?

  Seeing activity lengths

  easy view float times

  visual
• Statistics - Numerical, discrete is used for counting
• Statistics - Numerical, continuous is used for things you measure
• Statistics - Categorical, ordinal is used for things in an order
• Statistics - Categorical, nominal is used for things that have a name
• What is the formula for gradient?

  gradient =vertical/ horizontal
• Pie charts and bar graphs are us to display categorical data
• scatter plot and histograms(continuous ) are used to display numerical data
• Mean and median are used as a measure of location
• Range and standard deviation are used to measure the spread of data
• Skewed data is when the data is not evenly distributed across the data range.
• Normal distribution produces a bell shaped histogram and is symmetrical
• Null hypothesis - the opposite is assumed true
• Alternative Hypothesis - A hypothesis you wish to prove true
• Mean is the average of a set of values, calculated by adding all the values and dividing by the number of values.
• Median - middle point of distribution by adding 2 numbers and then dividing by 2
• Mode - The most common value in a set of data.
• skewed data is more suited to median and interquartile range
• Normal distribution is more suited to mean and standard deviation
• Uniform display is evenly spread
• Density = mass / volume
• Acceleration = speed / time
• Quarterly interest is divided by 1/3
• monthly interest is divided by 1/12
• Half year interest is divided by 1/6
• Yearly interest is divided by 1 or 1.5
• Effective rate of interest - amount times rate to power of years
• Present value- initial amount divided by interest rate to power of years