1.
What add-in program serves as the data analyzing tool in Excel?
Correct Answer
D. Analysis Toolpak
Explanation
The correct answer is Analysis Toolpak. The Analysis Toolpak is an add-in program in Excel that serves as a data analyzing tool. It provides a variety of statistical and analytical functions that can be used to analyze and manipulate data in Excel. With the Analysis Toolpak, users can perform tasks such as regression analysis, data sampling, and hypothesis testing. This add-in is commonly used by professionals and researchers who need to analyze large sets of data in Excel.
2.
Which of these is true about data analysis function?
Correct Answer
C. It can be used on only one worksheet at a time
Explanation
The correct answer is that the data analysis function can be used on only one worksheet at a time. This means that when performing data analysis tasks, such as creating pivot tables or running statistical functions, it can only be done on one worksheet within the Excel program. It cannot be applied simultaneously to multiple worksheets.
3.
Where does the result appear when a data analyst performs data analysis on a grouped worksheet?
Correct Answer
A. First worksheet
Explanation
When a data analyst performs data analysis on a grouped worksheet, the result appears on the first worksheet. This means that the analysis and any corresponding charts or tables will be displayed on the initial worksheet in the group.
4.
How does a data analyst perform data analysis on the remainder of the worksheets without results?
Correct Answer
D. Recalculate the analysis tool for each worksheet
Explanation
The correct answer suggests that in order to perform data analysis on the remainder of the worksheets without results, the data analyst should recalculate the analysis tool for each worksheet. This means that the analyst needs to rerun the analysis tool for each individual worksheet to generate the desired results. This approach ensures that the analysis is performed accurately and effectively on each worksheet separately, allowing the analyst to work on the data without any missing or incomplete results.
5.
What type of analysis tool creates a sample from a population by treating the input range as a population?
Correct Answer
D. Sampling analysis tools
Explanation
Sampling analysis tools create a sample from a population by treating the input range as a population. These tools are used to select a subset of data from a larger population in order to make inferences and draw conclusions about the entire population. By using sampling techniques, these tools provide a representative sample that can be analyzed to estimate population parameters and make predictions.
6.
What type of analysis tool performs linear analysis by using the "Least Squares" to fit a line through a set of observations?
Correct Answer
A. Regression
Explanation
Regression analysis is a type of analysis tool that performs linear analysis by using the "Least Squares" method to fit a line through a set of observations. This method minimizes the sum of the squared differences between the observed values and the predicted values on the line. Regression analysis is commonly used to analyze the relationship between a dependent variable and one or more independent variables, and it helps in predicting future values based on the observed data.
7.
What type of analysis tool fills a range with independent random numbers that are drawn from several distributions?
Correct Answer
D. Random number generation
Explanation
Random number generation is an analysis tool that fills a range with independent random numbers drawn from one or several distributions. This tool is commonly used in statistical analysis and simulations to generate random data that mimic real-world scenarios. It allows researchers to study the variability and uncertainty in their data and make informed decisions based on the results.
8.
What do data analysts call FFT in Fourier analysis?
Correct Answer
C. Fast Fourier transform
Explanation
The correct answer is "Fast Fourier transform". The Fast Fourier transform (FFT) is a widely used algorithm in data analysis for efficiently computing the discrete Fourier transform (DFT) of a sequence or function. It is called "fast" because it reduces the computational complexity of the DFT from O(n^2) to O(n log n), making it much faster for large datasets.
9.
What analysis tool type tests for equality of the population mean that underlies each sample?
Correct Answer
C. Two-sample t-Test
Explanation
A two-sample t-test is an analysis tool that tests for equality of the population means underlying each sample. This test is used to compare the means of two independent groups to determine if there is a significant difference between them. It calculates the t-statistic by comparing the means, standard deviations, and sample sizes of the two groups. The null hypothesis assumes that the means are equal, and the alternative hypothesis suggests that they are not. By conducting the two-sample t-test, we can determine if there is enough evidence to reject the null hypothesis and conclude that there is a significant difference between the population means.
10.
What tab leads a data analyst to the analysis tool pak in the Excel 2016?
Correct Answer
C. File
Explanation
The File tab in Excel 2016 leads a data analyst to the analysis tool pak. This is because the File tab contains various options related to managing and manipulating files, including the option to access and install add-ins such as the analysis tool pak. By clicking on the File tab, a data analyst can navigate to the options and settings that allow them to enable and use the analysis tool pak for data analysis purposes.