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S1 Cheat Sheet. You can handily use your calculator’s STAT mode to calculate the mean and variance of a frequency table, find (PMCC) and the and for the line of best fit, along with a number of summations such as Σ , Σ , Σ 2, ... Press SHIFT MODE for setup.
Ratio Charts are a visually powerful way to see relationships and trends between two different sets of time series data. For example, how Amazon is performing price wise relative to Microsoft over time.
* Find the mean, mode, median, range from a stem and leaf diagram. * Calculate the mean from a frequency table and estimate a mean from a grouped frequency table. * Solve (non-algebraic) problems involving mean, including combined means.
Ratio Chart Examples. Here are a few examples of ratio charts: Stock ratios: Investors can use ratio charts to compare the performance of two stocks in the same industry. For example, a trader might compare the performance of two competing technology companies, such as Apple and Microsoft, to determine which stock is a better investment.
Ratio Analysis basics. Ratio Analysis, also known as Relative Strength Analysis, involves a comparison between two instruments to identify their relative performance. It is calculated by dividing the price of one instrument with that of the other.
2 lut 2021 · Example The mean maths score of 20 pupils in class A is 62. The mean maths score of 30 pupils in class B is 75. What is the overall mean of all the pupils’ marks. The teacher realises they mismarked one student’s paper; he should have received 100 instead of 95. Explain the effect on the mean and median.
Contents. Whole Topic Notes. 3A The Normal Distribution. 3B Finding Probabilities. 3C Finding Values From Probabilities (Inverse Function) 3D The Normal Normal Distribution (Z Distribution) 3E Finding the Mean or Standard Deviation. 3F Approximating from the Binomial Distribution. 3G Hypothesis Testing.
