2. What assumptions about the data should be satisfied for a DA? What types of data...
2. What assumptions about the data should be satisfied for a DA? What types of data screening should be performed to assess whether assumptions are violated?
Homework Answers
Answer)
DA or a Data Administrator is the profession where the person is
responsible for the requirements gathering, analysis, and design of
the database and they establish the flow of the data around the
organization and also between the databases and another system in
the organization. The assumptions about the data which should be
satisfied for a DA ca be that:
a) Standards are specified or can be specified across the
databases.
b) Establishing the policies and established policies regarding the
data usage, security, authorization, and data flow
c) Being able to assist in the development process of the
application using the data
d) Supporting the sharing of data across the levels and departments
of the company through a structured and common format manner.
There are many types of screening which should be performed to
assess that the assumptions stay intact and are the data is useful
as expected such as:
a) Data should be correct inside the database.
b) The DBMS software and system should be working and installed and
configured.
c) Data can be used from the DBMS to be used in the implementation
of information systems.
d) The database is tuned for optimal performance and is
efficient.
e) Data integrity is maintained and backups are made regularly.
Add Answer to:
2. What assumptions about the data should be satisfied for a DA?
What types of data...
Question 1: Each of the scenarios below represent situations in which (1) either all necessary assumptions...
Question 1: Each of the scenarios below represent situations in which (1) either all necessary assumptions for the unbiasedness of OLS estimators ("unbiasedness assumptions") are satisfied, or (2) one of the unbiasedness assumptions is violated. Look at the econometric model put forward in each scenario. For each scenario, state your opinion of whether or not all the unbiasedness assumptions are satisfied. If one assumption is violated, state which one does not hold true. Provide a brief explanation (no more than...
By reading a misleading graph, what types of questions should you ask about the data you...
By reading a misleading graph, what types of questions should you ask about the data you are reviewing? What type of basic information, formatting should be present on a graph to make it clear and unambiguous?
ess OY Parametric methods require mere restrictive assumptions about the level of data measurement and assumptions about the form of the probability distribution of the population. more fewer Determi...
ess OY Parametric methods require mere restrictive assumptions about the level of data measurement and assumptions about the form of the probability distribution of the population. more fewer Determine whether the following statements are true or false. False Statement If a statistical method can be used with ordinal data, it is most likely a nonparametric method. Most parametric statistical methods require the use of ordinal data. One consideration in deciding whether to use parametric or nonparametric methods is whether O...
Data for 34 cereals were examined to look for an association between fiber content and calories. A regression analysis...
Data for 34 cereals were examined to look for an association between fiber content and calories. A regression analysis was performed, in which the dependent variable was fiber and the independent variable was calories. Given below are graphs from the regression output. Which of the assumptions for inference are violated? Explain Click the icon to view the graphs from the regression output. Regression output graphs Is the straight enough condition satisfied? Yes 0 12 Is the independence assumption satisfied? Yes...
Preliminary data analyses indicate that it is reasonable to consider the assumptions for one-way ANOVA satisfied....
Preliminary data analyses indicate that it is reasonable to consider the assumptions for one-way ANOVA satisfied. Perform the required hypothesis test using the critical-value approach. At the 0.01 significance level, do the data provide sufficient evidence to support the claim that a difference exists between the population means of the three different brands? The sample data are given below. Brand A 14 47 40 39 Brand B Brand C 28 27 31 32. 36
(4 points) Residuals vs fitted plots can be used to assess whether the four key assumptions for a...
(4 points) Residuals vs fitted plots can be used to assess whether the four key assumptions for a simple linear regression have been met. Each of the plots below displays an instance where at least one of these assumptions may not have been met. For each plot, identify which assumption has been most violated, if any. 1. Plot A shows that A. The relationship between x and y cannot be assumed to be linear. B. The residuals do not appear...
Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples...
Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples of 103 plots with cropland and 99 plots with grassland yielded the given summary statistics for the number of species of bird. At the 5% significance level, do the data provide sufficient evidence to conclude that a difference exists in the mean number of species in the two regions? Cropland Grassland x overbar 1 equals 14.12 x overbar 2 equals 15.87 s 1 equals...
Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples...
Preliminary data analyses indicate that the assumptions for using pooled t-procedures are satisfied. Independent random samples of 102 plots with cropland and 100 plots with grassland yielded the given summary statistics for the number of species of bird. At the 1% significance level, do the data provide sufficient evidence to conclude that a difference exists in the mean number of species in the two regions? Cropland Grassland x overbar 1 = 14.51 x overbar 2 = 15.33 s 1 =...
Preliminary data analyses indicate that you can reasonably consider the assumptions for using pooled t-procedures satisfied....
Preliminary data analyses indicate that you can reasonably consider the assumptions for using pooled t-procedures satisfied. Independent random samples of 103 plots with cropland and 99 plots with grassland yielded the given summary statistics for the number of native species. Cropland: x bar 1= 14.62 s1=4.74 n1=103 Grassland: x bar 2= 15.89 s2=4.91 n2=99 The 98% confidence interval is from ? to ?
A ________ is a set of assumptions about how sample data are selected and about the...
A ________ is a set of assumptions about how sample data are selected and about the population from which the sample data are selected.
Question 1: Each of the scenarios below represent situations in which (1) either all necessary assumptions for the unbiasedness of OLS estimators ("unbiasedness assumptions") are satisfied, or (2) one of the unbiasedness assumptions is violated. Look at the econometric model put forward in each scenario. For each scenario, state your opinion of whether or not all the unbiasedness assumptions are satisfied. If one assumption is violated, state which one does not hold true. Provide a brief explanation (no more than...
ess OY Parametric methods require mere restrictive assumptions about the level of data measurement and assumptions about the form of the probability distribution of the population. more fewer Determine whether the following statements are true or false. False Statement If a statistical method can be used with ordinal data, it is most likely a nonparametric method. Most parametric statistical methods require the use of ordinal data. One consideration in deciding whether to use parametric or nonparametric methods is whether O...
Data for 34 cereals were examined to look for an association between fiber content and calories. A regression analysis was performed, in which the dependent variable was fiber and the independent variable was calories. Given below are graphs from the regression output. Which of the assumptions for inference are violated? Explain Click the icon to view the graphs from the regression output. Regression output graphs Is the straight enough condition satisfied? Yes 0 12 Is the independence assumption satisfied? Yes...
Preliminary data analyses indicate that it is reasonable to consider the assumptions for one-way ANOVA satisfied. Perform the required hypothesis test using the critical-value approach. At the 0.01 significance level, do the data provide sufficient evidence to support the claim that a difference exists between the population means of the three different brands? The sample data are given below. Brand A 14 47 40 39 Brand B Brand C 28 27 31 32. 36
Most questions answered within 3 hours.
-
What are five tips in conducting knowledge assessment/literature
review research? Each of these tips needs to...
asked 24 minutes ago -
Antigen presenting cells link innate and adaptive immune
responses. In the theoretical scenario where phagosomes cannot...
asked 30 minutes ago -
Dealing with conflict, in my opinion, is a skill and an art. I
believe that those...
asked 1 hour ago -
6. A long straight wire with circular cross section and radius
1.5 cm carries a 1.2...
asked 1 hour ago -
Deacon Corporation has provided the following financial data
from its balance sheet and income statement:
Year...
asked 2 hours ago -
List and discuss at least three variables from everyday life for
which you expect the variable ...
asked 1 hour ago -
A high-pass filter consists of a 1.60 μF capacitor in series
with a 125 Ω resistor....
asked 2 hours ago -
A newly developed artificial intelligence has trouble
distinguishing hand-written numbers from hand-written alphabets.
There are pictures...
asked 2 hours ago -
The carbonate ion CO3 2- has multiple resonance structures.
a. Draw them and assign the hybridization...
asked 2 hours ago -
In doing an allocation for a basket purchase
Use the individual costs and the total market...
asked 2 hours ago -
what were the social political and economic causes and impacts of
the late 19th century urban...
asked 2 hours ago -
if the magnitude of a velocity vector is 10m/s and it
makes an angle of 45...
asked 2 hours ago