A show statement is used by a database administrator to get details about the items in a database. A data dictionary has this information.
- facts factors applied or recorded in a database, facts device, or as a thing of a studies examine are given names, definitions, and houses in a data dictionary.
- A imperative store for metadata is known as a facts dictionary. records about facts is called metadata.
- Examples of information that might be found in a company's data dictionary include the names of all the databases that make up the organisation.
The shape and content material of records are categorised and communicated the use of a information dictionary, which also offers insightful descriptions for mainly distinct data objects.
The database control machine where the information dictionary is stored is accountable for this. therefore, on every occasion a database change is finished, the database control device without delay updates the facts dictionary. due to its self-updating nature, that is referred to as an energetic statistics dictionary.
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Answer:
10.48%
Explanation:
Real interest rate = (1 + nominal interest rate) / (1 + inflation rate) - 1
1.16/1.05 - 1 = 10.48
Nominal interest rate is real interest rate plus inflation rate
Real interest rate is interest rate that has been adjusted for inflation
Answer:
Question 1: The most correct option is option D, which is 0.0133
Question 2: Her data is a random sample from the population of interest.
Explanation: For the first question;
Standard error I the error in the standard deviation. To calculate standard error the formula is used.
S.E = Sd/√n
S.E = standard error
Sd= standard deviation = 0.2
n = number of occurrence = 180
The proportion of the regular users of vitamin among the 180 people is the standard deviation between them.
Using equation above.
S.E = 0.20 ÷ √180 =
0.20 ÷ 13.42 = 0.0149
S.E is 0.0149, when compared to the options, the most correct option is 0.0133, because the question states the answer to be approximately to which of the option.
QUESTION2:
Her research will have much error, because she chooses the car to count. Therefore the research procedure has not satisfied the process that will produce an accurate result. Since she has choosed the street to be her population of interest, all the cars in the street should be counted.
This is not a randomized controlled research, so selection of cars to count is not necessary.
As a handy tip, we were told that in order to convert the lease factor of a certain amount or transaction to interest rate, we just have to multiply the value by 2, 400.
interest rate = (0.00065)(2400) = 1.56%
Thus, the answer for this item is 1.56%.
Answer:
(c). Random Stratified
Explanation:
Sampling refers to selection of a number of observations for analysis as a representative of the entire population of observations wherein the results would be interpreted the same as if the whole population was subject to analysis.
In a stratified random sampling, the observations are divided into small groups known as strata which relate to a sample interval, from which an item is chosen at random.
In stratified sampling, the selection of an item is taken from the observations belonging to a strata belonging to a particular sample interval.
In the given case, stratified random sampling has been used.
