225 results for "sample".
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Question in Skills Audits for Maths and Stats
Calculate probability of selecting coloured counters from a bag.
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Question in Julie's workspace
Simple probability question. Counting number of occurrences of an event in a sample space with given size and finding the probability of the event.
rebelmaths
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Question in How-tos
This question shows how to generate a random set of $(x,y)$ samples, where $y = mx + c + \mathrm{noise}$.
The JSXGraph extension is used to show a scatter plot of the data. This isn't necessary if you just want to generate the data.
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Question in Newcastle University Sports Science
Two sample t-test to see if there is a difference between scores on questions between two groups when the questions are asked in a different order.
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Question in Demos
The student must write code to compute the standard deviation of an unknown list of measurements.
The suggested answer uses numpy.std.
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Question in Newcastle University Sports Science
No description given
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Question in Julie's workspace
It is estimated that 30% of all CIT students cycle to college. If a random sample of eight CIT students is chosen, calculate the probability that...
rebelmaths
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Question in MATH6059
Two ordered data sets, each with 10 numbers. Find the sample standard deviation for each and for their sum.
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Question in Musa's workspace
Recovering original function given some information such as derivative and value at some point.
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Question in Content created by Newcastle University
Finding the confidence interval at either 90%, 95% or 99% for the mean given the mean and standard deviation of a sample. The population variance is not given and so the t test has to be used. Various scenarios are included.
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Question in Venktesh's workspace
No description given
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Question in Content created by Newcastle University
Finding the confidence interval at either 90%, 95% or 99% for the mean given the mean of a sample. The population variance is given and so the z values are used. Various scenarios are included.
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Question in Content created by Newcastle University
Finding the confidence interval at either 90%, 95% or 99% for the mean given the mean of a sample. The population variance is given and so the z values are used. Various scenarios are included.
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Question in MESH
This question provides a list of data to the student. They are asked to find the mean, median, mode and range.
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Question in R programming
The student must write R code to generate samples and calculate CDFs of some common distributions.
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Question in Programming extension
The student must write code to compute the standard deviation of an unknown list of measurements.
The suggested answer uses numpy.std.
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Question in MESH
The student is presented with a scenario then asked to select a sample size to investigate and the number of bins for a histogram of the data. Theoretical distributions of normal, uniform and lognormal distributions can be overlayed on the histogram. Student is asked to identify the most likely distribution and the mean of this distribution (within a +/-10% margin of error).
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Question in ENG2012/CME1027 practice
Finding the confidence interval at either 90%, 95% or 99% for the population variance of a sample. $\chi^2$ tables are used. A single scenario is given.
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Question in MESH
The student is presented with a scenario then asked to select a sample size to investigate and the number of bins for a histogram of the data. Theoretical distributions of normal, uniform and lognormal distributions can be overlayed on the histogram. Student is asked to identify the most likely distribution and the mean of this distribution (within a +/-10% margin of error).
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Question in Stats
This question assesses the learner's ability to compute a confidence interval for a difference of two means, given two samples.
Randomized variables: sample raw data and confidence level.
Adapted from section 7.3.1 in OpenIntro Statistics (4th ed).
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Question in Stats
This question assesses the learner's ability of calculating confidence intervals for numerical data and conducting a one-sample t-test.
Randomized input values: sample summary statistics and confidence level.
Adapted from question 7.12 in OpenIntro Statistics (4th ed).
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Question in Stats
This question assesses learners' ability to conduct a two sample t-test.
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Question in Significance testing
No description given
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Question in MATH6059
Calculate confidence interval for the mean, sample variance n>30
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Question in STAT7008
Compute a 95% confidence interval for the population mean given a small sample, and compare it with a confidence interval for a different population.
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Question in STAT7009 Inferential Statistics
Calculate confidence interval for the mean, sample variance adaptive marking
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Question in MATH6059
Finding the confidence interval at either 90%, 95% or 99% for the mean given the mean and standard deviation of a sample. The population variance is not given and so the t test has to be used. Various scenarios are included.
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Question in STAT7009 Inferential Statistics
Finding the confidence interval at either 90%, 95% or 99% for the mean given the mean of a sample. The population variance is given and so the z values are used. Various scenarios are included.
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Question in STAT8013 Chemometrics
Compute a 95% confidence interval for the population mean given a small sample, and compare it with a confidence interval for a different population.
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Question in STAT7009 Inferential Statistics
Two ordered data sets, each with 10 numbers. Find the sample standard deviation for each and for their sum.