295 results in Content created by Newcastle University - search across all projects.
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Question
Minitab was used to fit an AR(1) model to a stationary time series. Given the output answer the following questions about the model and use the model to make forecasts.
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No description given
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Two factor ANOVA example
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Two-way ANOVA example, 5 subjects, 4 treatments.
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One-way ANOVA example
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Approximating integral of a quadratic by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.
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Approximating integral of a quadratic by Riemann sums . Will include an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.
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A multiple linear regression model of the form:
\[Y=\beta_0+\beta_1X_1+ \beta_2X_2+\beta_3X_3+\beta_4X_4+\epsilon \]
is fitted to some data in Minitab which generates a table showing estimates of the parameters with associated $p$-values. Determine which variable to exclude first.
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Interpreting the minitab output from a logistic regression model of salary against obesity as measured by BMI.
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Exam (22 questions)Questions used in a university course titled "The foundations of calculus"
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LSD and Tukey yardsticks on five treatments. Also two-way Anova test on same set of data.
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Paired t-test to see if there is a difference between times take in a task.
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LSD and Tukey yardsticks on three treatments. Also one-way Anova test on same set of data.
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Details on inputting numbers into Numbas.
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Abstract simplex method question. Given optimal tableau, student must identify optimal solution and objective value.
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Exam (2 questions)
Use the simplex method to solve a linear program.
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Entering numbers in Numbas, Part 1.
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No description given
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Exam (4 questions)
Approximate the integral of a function by Riemann sums.
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Independent events in probability. Choose whether given three given pairs of events are independent or not.
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Approximating integral of a quadratic by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.
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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.
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Exam (5 questions)
Some more questions on set theory - covering set builder notation, cartesian products, complements.
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Approximating integral of a linear function by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.
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Approximating integral of a linear function by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.
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Exam (4 questions)
Questions on using quantifiers.
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Given a random variable $X$ normally distributed as $\operatorname{N}(m,\sigma^2)$ find probabilities $P(X \gt a),\; a \gt m;\;\;P(X \lt b),\;b \lt m$.
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Exam (24 questions)Questions used in a university course titled "Quantitative Methods for Business Management"
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Given sample data find mean, standard deviation, median, interquartile range,
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Find out whether the data presented in this question follows a Poisson distribution. Uses the $\chi^2$ test.