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Statistics Questions
Total questions: 1788
What is a set of numbers representing some sort of information from the sample population?Popularity: 52
What are the uses of percentages?
Popularity: 50
What is the importance of statistics in the field of engineering?
Popularity: 49
What shows how the data set is spread around the mean?
Popularity: 49
How can you perform a sample selected in such a way that each member of the population has an equal probability of being included?
Popularity: 48
What is a familiar and convenient way of keeping score of a set of obervations when constructing a frequency distribution table?
Popularity: 48
What are a set of numbers representing some sort of information from the sample population?
Popularity: 48
What shows how the data set as a whole is spread around the mean?
Popularity: 47
When performing a study what is a type 2 error?
Popularity: 46
What is standard deviation?
Popularity: 44
What does the standard deviation of a data set tell us about the data and why is the standard deviation an important measure?
Popularity: 34
What is a descriptive statistic?
Popularity: 31
How do you calculate percentage error?
Popularity: 31
What are a number of measurements that fall into each class?
Popularity: 27
What is the formula for median age?
Popularity: 26
What is a word meaning rule or principle frequently expressed in statistical symbols?
Popularity: 26
What is a Pearson correlation and an example of it?
Popularity: 25
How do you determine directional or non-directional alternate hypotheses?
Popularity: 25
Which statistical test do you use if you need a correlation for many pairs such as if you have data on 50 couples and want to know if they are similar or different based on a range of values?
Popularity: 25 | Needs Answer
What is the link between the characteristic function of a discrete probability distribution and its discrete Fourier transform?
Popularity: 24
How do you calculate the geometric mean?
Popularity: 24
Mean median and mode in math What if you have two modes what do you do?
Popularity: 24
Does correlation prove causality?
Popularity: 23
When do you use sampling techniques?
Popularity: 23
What is a response variable?
Popularity: 23
What is a weighted average?
Popularity: 23
What does true Bayesian estimate mean in connection with the IMDb Top 250 ratings?
Popularity: 23
What role does the Central Limit Theorem play in evaluation of the confidence level or hypothesis testing?
Popularity: 22
What are alpha and beta?
Popularity: 22
What are the differences between Type 1 errors and Type 2 errors?
Popularity: 21
What is the difference between 'stochastic' and 'deterministic'?
Popularity: 21
How can you prove that a random variable follows the Poisson distribution?
Popularity: 21
How does the type of data collected and the way in which the data is collected affect the possibility of type 1 and type 2 errors?
Popularity: 21
What is the average of the values called in a data set?
Popularity: 21
What is Fisher's ideal index?
Popularity: 20
One of the values of a variable which divides the distribution of the variable into four groups having equal frequency?
Popularity: 20
In a one-way analysis of variance if the null hypothesis is rejected what does it indicate?
Popularity: 20
What three elements are necessary to conduct a t-test in statistics and find a critical value and test for a scenario?
Popularity: 20
What is a scatter diagram how is it useful?
Popularity: 20
What is the sample size if in theory 19 out of 20 cases the results from a poll should differ by no more than 1 percent in either direction from what would have been obtained by polling all Americans?
Popularity: 20
Besides the term bell curve what other descriptive term can be used for showing how a data set as a whole is spread around the mean?
Popularity: 20
When performing a study what is a type 1 error?
Popularity: 20
What are measurements called that fall beyond three standard deviations from the mean?
Popularity: 20
What is the definition of MEAN ABSOLUTE PERCENTAGE ERROR?
Popularity: 19
What is an independent variable in statistics?
Popularity: 19
How many licence plates are in a Californian sequence for example 1aaa001-1zzz999?
Popularity: 19
Is there an idiots guide to Mann Whitney?
Popularity: 19
What is THE definition frequency table?
Popularity: 19
What is a set of numbers representing some sort of information from the sample or population?
Popularity: 19
How can we find the median of grouped data?
Popularity: 18
What is a polynomial equation containing a variable to the second power?
Popularity: 18
What are the mean and the standard deviation of a proportion?
Popularity: 18
What are examples of parametric and nonparametric statistical tests?
Popularity: 18
How do you generate a Gaussian bell shape graph when you have a mean and standard deviation and absolutely no other data?
Popularity: 18
What is the difference between parametric and nonparametric statistical tests?
Popularity: 18
In statistics what shows how far away a measurement is from the mean or average of the set?
Popularity: 18
What word tells how many standard deviations a measurement is away from the mean?
Popularity: 18
How many toothpicks can be made from a tree?
Popularity: 17
Why is a sample preferred to a census?
Popularity: 17
Would a 0.5 correlation be considered weak modest strong or very weak?
Popularity: 17
What are quantitative observations?
Popularity: 17
How many ounces of water in 280 milliliters?
Popularity: 17
What are the four parts of a coordinate plane?
Popularity: 17
What is quartile deviation?
Popularity: 17
Why do you keep the larger of the two variances in the numerator while calculating f distribution variance ratio?
Popularity: 17
What is an example of a variable that is not normally distributed?
Popularity: 17
What are statistics?
Popularity: 17
What is a statistical variable?
Popularity: 17
How many possible outcomes of tossing a coin 3 times have exactly 2 heads?
Popularity: 17
What is practical significance?
Popularity: 17
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