Computer related Flashcards
program analysis
program analysis help decision-makers to sharpen their judgements about program choices.
The most important element in program analysis involves the development of alternatives and the definition of objectives or criteria
Magnetic-core memory
Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about 1955 and 1975.
- wikipedia
magnetic disc memory
The best memory system in a situation where large capacity and low unit cost are more important than access speed.
A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data. It is covered with a magnetic coating and stores data in the form of tracks, spots and sectors. Hard disks, zip disks and floppy disks are common examples of magnetic disks.
via techopedia.com
Magnetic drum memory
Drum memory was a magnetic data storage device invented by Gustav Tauschek in 1932 in Austria.[1][2] Drums were widely used in the 1950s and into the 1960s as computer memory.
- wikipedia
Interactive programming
Interactive programming is the procedure of writing parts of a program while it is already active.
an extreme opposite to batch processing, where neither writing the program nor its use happens in an interactive way.
also called conversational programming.
Sensitivity analysis
to test the impact of alternative assumptions (book)
Sensitivity analysis is the study of how the uncertainty in the output of a mathematical model or system (numerical or otherwise) can be apportioned to different sources of uncertainty in its inputs. - Wikipedia
Risk analysis
the difference between sensitivity analysis and risk analysis is that risk analysis includes an estimate of probabilities of different values of input factors
Amortized cost
Amortized cost is that accumulated portion of the recorded cost of a fixed asset that has been charged to expense through either depreciation or amortization.
via accountingtools.com
The Cohort Survival Projection Method
In this method, net migration within cohorts is assumed to be zero
The Cohort Survival Projection Method is a simple method for forecasting what the future population will be based upon the survival of the existing population and the births that will occur.
www.sjsu.edu
marginal cost
the cost added by producing one additional unit of a product or service.
dictionary.com
marginal benefit
A marginal benefit is an additional satisfaction or utility that a person receives from consuming an additional unit of a good or service. A person’s marginal benefit is the maximum amount he is willing to pay to consume that additional unit of a good or service.
investopedia.com
t-test
t-test is appropriate to the situation that a comparison between two correlated means obtained from a small sample. (book)
t-test is appropriate to the situation that a comparison between two uncorrelated means obtained from small samples. (book)
The t-test is any statistical hypothesis test in which the test statistic follows a Student’s t-distribution under the null hypothesis.
A t-test is most commonly applied when the test statistic would follow a normal distribution if the value of a scaling term in the test statistic were known.
The t-test can be used, for example, to determine if two sets of data are significantly different from each other.
wikipedia
analysis of variance
analysis of variance is a statistical test that is appropriate to the situation that a comparison of three or more means are made. (book)
Analysis of variance (ANOVA) is a collection of statistical models and their associated estimation procedures (such as the “variation” among and between groups) used to analyze the differences among group means in a sample. - wikipedia
χ2 test (chi-squared test)
statistical test used to a comparison of the divergence of observed frequencies with those expected on the hypothesis of a normal distribution, and of equal probability of occurrence. (book)
A chi-squared test, also written as χ2 test, is any statistical hypothesis test where the sampling distribution of the test statistic is a chi-squared distribution when the null hypothesis is true. Without other qualification, ‘chi-squared test’ often is used as short for Pearson’s chi-squared test. - wikipedia
quasi-experimental design
example of a quasi-experimental design is a time-series design - model for evaluative research. (book)
A quasi-experiment is an empirical interventional study used to estimate the causal impact of an intervention on target population without random assignment.
wikipedia
