ENGR 371_Final 2026

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Across
  1. 1. A property of a probability model and two (or more) events that allows the probability of the intersection to be calculated as the product of the probabilities. 1 word.
  2. 3. This is the probability (in statistics) that the test rejects the null hypothesis when the null hypothesis is indeed false. 1 word.
  3. 5. A univariate data display that uses rectangles proportional in area to class frequencies to visually exhibit features of data such as location, variability, and shape. 1 word.
  4. 6. In the most general usage, a measure of the interdependence among data. The concept may include more than two variables. The term is most commonly used in a narrow sense to express the relationship between quantitative variables or ranks. This value is between -1 and +1. 1 word.
  5. 10. The probability 1 – alpha associated with a confidence interval expressing the probability that the stated interval will contain the true parameter value. 2 words (no space).
  6. 11. The value of a statistic corresponding to a stated significance level as determined from the sample distribution. 2 words (no space).
  7. 15. Is a function that assigns a real number to each outcome in the sample space of a random experiment. 2 words (no space).
  8. 16. A measure of association between two random variables obtained as the expected value of the product of the two random variables around their means. There is no limit to this value (i.e., negative infinity to positive infinity). 1 word.
  9. 18. A numerical measure between 0 and 1 assigned to events in a sample space. Higher number indicate the event is more likely to occur. 1 word.
  10. 20. This term generally related to a particular hypothesis that is under test and is always expressed in terms of equality. 2 words (no space).
  11. 23. The most frequently seen number in a data set. 2 words (no space).
  12. 24. In hypothesis testing, a region in the sample space of the test statistic such that if the test statistic falls within it, the null hypothesis cannot be rejected. 2 words (no space).
  13. 25. The difference between the third and first quartiles in a sample of data. The interquartile range is less sensitive to extreme data values than the usual sample range. 2 words (no space).
  14. 26. An observation that consists of several measurements. 2 words (no space).
Down
  1. 2. A function used to calculate probabilities and to specify the probability distribution of a continuous random variable. 3 words (no spaces).
  2. 4. The number of independent comparisons that can be made among the elements of a sample. The term is analogous to the number of independent coordinates requires to determine the motion of the object. 3 words (no spaces).
  3. 7. The probability distribution of a random variable obtained from the joint probability distribution of two or more random variables. 3 words (no spaces).
  4. 8. This is usually a function of only sample data values, and when these data values are available, it results in an estimate of the parameter of interest. 2 words (no space).
  5. 9. A measure of variability defined as the expected value of the square of the random variable around its mean. 1 word.
  6. 12. The simplest form of this states that the sum of n independently distributed random variables will tend to be normally distributed as n becomes large. 3 words (no spaces).
  7. 13. An interval that contains a specified proportion of a population with a stated level of confidence. 2 words (no space).
  8. 14. The arithmetic average of the observations in a sample. 2 words (no space).
  9. 17. Any procedure used to test a statistical hypothesis. 2 words (no space).
  10. 19. A specially constructed plot for a variable x (usually on the abscissa) in which y (usually on the ordinate) is scaled so that the graph of the normal cumulative distribution is a straight line. 3 words (no spaces).
  11. 21. The value that divides the data into two equal halves. 2 words (no space).
  12. 22. A function of a sample of observations that provides the basis for testing a statistical hypothesis. 2 words (no space).