Answer: The preparation phase
Explanation:
The preparation phase of data analysis is a phase where the Data analyst examines the information he got in order to carry out his or her job properly. One if the test he carries out that period is Duplicate testing, it is used to identify transactions with duplicate values in specified fields. It can quickly review files
Answer:
Explanation:
Data given and notation
represent the sample mean
represent the standard deviation for the sample
sample size
represent the value that we want to test
represent the significance level for the hypothesis test.
t would represent the statistic (variable of interest)
represent the p value for the test (variable of interest)
State the null and alternative hypotheses.
We need to conduct a hypothesis in order to determine if the mean is lower than 5600, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
We don't know the population deviation, so for this case is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:
(1)
t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".
Calculate the statistic
We can replace in formula (1) the info given like this:
Answer:
Correct option is (c)
Explanation:
Progressive tax rate depends upon the income of the individual. In other words, progressive tax rate increases as income increases. So, higher income group have to pay more taxes as compared to lower income group.
Proportion of tax collected from high income group is more in case of progressive tax rates. In this case, Blade's tax rate is 10% that is 5,000/50,000 and Caden's tax rate is 12% that is 12,000/100,000.
So, tax rate is higher for Caden as compared to rate applicable on Blade's income.
The fluctuation of growth and decline in an economy is called BUSINESS CYCLE OR ECONOMY CYCLE.
The fluctuations in business cycle usually involves shift between period of relatively rapid economic growth and period of relative stagnation or decline. Business cycle is measured by considering the growth rate of real gross domestic product of the nation concerned.
