D3 Stats Flashcards
1
Q
- For a given function, f(t) = f(-t). What type of symmetry does f(t) have?
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2
Q
- The Taylor series expansion for cosx contains which powers of x?
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3
Q
- What is the name for a vector that represents the sum of two vectors?
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4
Q
- What is the term that describes a possible outcome of an experiment?
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5
Q
- In probability theory, what is the term that describes the set of all possible outcomes of an experiment?
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6
Q
- If two random variables are independently distributed, what is their relationship?
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7
Q
- Which of the following describes the first derivative at point A of the function shown in the figure?
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8
Q
- Which of the following describes the second derivative at point A of the function shown?
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9
Q
- How can the following differential equation best be described?
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10
Q
- The differential equation given is correctly described by which of the following choices?
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11
Q
- How is the capital recovery factor (A/P, i, n) related to the uniform series sinking fund factor (A/F, i, n)?
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12
Q
- What is an annuity?
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13
Q
- What is the formula for a straight line depreciation rate?
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14
Q
- Which of the following is true regarding the minimum attractive rate of return used in judging proposed investments?
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15
Q
- Which of the following situations has a conventional cash flow so that an internal rate of return can be safely calculated and used?
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16
Q
- What is a borrower of a particular loan almost always required to do during repayment?
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17
Q
- What is “work in process” classified as?
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18
Q
- What is the acid test ratio?
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19
Q
- Which of the following affects most of the electrical and thermal properties of materials?
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20
Q
- What are valence electrons?
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21
Q
- What is the strong bond between hydrogen atoms called?
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22
Q
- What are Van der Waals forces?
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23
Q
- In molecules of the same composition, what are variations of atomic arrangements known as?
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24
Q
- Which of the following accurately describes differences between crystalline polymers and simple crystals?
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25
25. What is the atomic packing factor (APF) for a simple cubic crystal?
26
26. How many atoms are in the unit cell of a body-centered cubic structure?
27
27. How many atoms are there per unit cell for a face-centered cubic structure?
28
28. What is the \(1^\text{st}\) coordination number of a body centered cubic structure?
29
29. What is the \(1^\text{st}\) coordination number of a face centered cubic structure?
30
30. Which point on the stress-strain curve shown gives the ultimate stress?
31
31. Considering the stress-strain diagram for aluminum, which point is the fracture point?
32
32. Consider this stress-strain diagram for a carbon steel in tension. Determine the region of perfect plasticity or yielding.
33
33. Under which type of loading does fatigue occur?
34
34. A specimen is subjected to a load. When the load is removed, the strain disappears. From this information, which of the following can be deduced about this material?
35
35. Which of the following may be the Poisson ratio of a material?
36
36. What is the definition of instantaneous velocity?
37
37. Which of the following statements is FALSE?
38
38. Which material type usually has a higher index of refraction?
39
39. It states that the sum of the moments of all forces acting on an object is equal to the moment of the resultant force.
40
40. It states that the sum of the difference between forces acting and the derivatives of momenta are equal to zero.
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41. It is a structure that can’t be analyzed using only equations of equilibrium or statics.
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42. EDA in statistics stands for
43
43. CDA in statistics stands for
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44. A type of statistics which assume that the data follow a specific distribution (usually normal) and rely on parameters like mean and standard deviation.
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45. A type of statistics that does not assume a specific distribution for the data, making them useful for data that is ordinal, nominal, or not normally distributed.
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46. A type of statistics which focuses on analyzing and summarizing data for a single variable at a time, often using measures of central tendency and dispersion.
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47. A type of statistics that examines the relationship between two variables to identify any association or correlation.
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48. A type of statistics which involves analyzing data that includes more than two variables to understand complex relationships and interactions among them.
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49. It is an approach to analyzing data sets to summarize their main characteristics often with visual methods. It’s used to detect patterns, anomalies, and check assumptions.
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50. It is used to confirm hypotheses about data. It often involves inferential statistics methods to test hypotheses.
51
51. A type of statistics which involves updating the probability of a hypothesis as more evidence or data becomes available, based on Bayes' Theorem.
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52. It focuses on analyzing data points collected or recorded at specific time intervals, typically to forecast future trends.
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53. A type of statistics which analyze data that has a spatial or geographical aspect, identifying patterns, clusters, or variations across locations.
54
54. Which of the following best describes the null hypothesis?
55
55. In a hypothesis test, if the p-value is less than the significance level (α), you should:
