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ElenaW [278]
2 years ago
8

Data definition involves describing the properties of the data that go into each database table, specifically the ____ or column

s that make up the database.
Mathematics
1 answer:
MArishka [77]2 years ago
6 0

Data definition involves describing the properties of the data that go into each database table, specifically the fields or columns that make up the database.

  • Database. a collection of related information organized for rapid search and retrieval.
  • Record. a collection of fields that appear as a row in a database or table.
  • The term DATABASE describes a collection of data organized in a manner that allows access, retrieval, and use of that data.

What is a field record table and query?

  • Field: A field refers to an area within a record which is reserved for a specific piece of data. Eg. Employee ID.
  • Table: Table is the collection of records of specific types. E.g. Employee table is a collection of record related to all the employees.
  • Queries can perform many different functions in a database. Their most common function is to retrieve specific data from the tables.

Learn more about database

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According to the National Association of Realtors, the mean sale price for existing homes in the United States in 2011 was $214,
Free_Kalibri [48]
<h3>Answer: 49.85% (second answer choice)</h3>

===========================================

Explanation:

mu = 214300 = population mean of home values

sigma = 41000 = population standard deviation of home values

Compute the z score for the raw score x = 91300

z = (x-mu)/sigma

z = (91300-214300)/41000

z = -123000/41000

z = -3

This tells us the raw score x = 91300 is exactly 3 standard deviations below the mean.

--------------------------

Compute the z score for the raw score x = 214300

z = (x-mu)/sigma

z = (214300-214300)/41000

z = 0/41000

z = 0

This is expected as the raw score x = 214300 is exactly at the mean

--------------------------

Finding P(91300 < x < 214300) is equivalent to computing P(-3 < z < 0)

Recall that the empirical rule states roughly 99.7% of the distribution is within 3 standard deviations of the mean.

In terms of an equation, this means P(-3 < Z < 3) = 0.997 approximately.

Cut 99.7% in half to get (99.7%)/2 = 49.85%

So, P(-3 < Z < 0) = 0.4985 approximately.

4 0
4 years ago
Which expression has a solution of 36, if w = 9?<br><br> 7 w<br> 4 w<br> 6 w<br> 5 w
Anon25 [30]

Answer:

4w.

Step-by-step explanation:

Replace w with 9.

7(9)=63

4(9)=36

6(9)=54

5(9)=45

Therefore the answer is 4w.

7 0
3 years ago
Read 2 more answers
Joyce saved $190 on an item that was 35 % off. What was the original price?
BabaBlast [244]
 the answer is 66.50 ////////////////////////////////////////////////////////// dont count the dashs
5 0
3 years ago
Which of the graphs below represents the equation 3x-2y=-12?
Sunny_sXe [5.5K]

Graph B would be the answer.

3x-2y=12

-2y=-3x+12

y=3/2x-6

6 0
4 years ago
49 – 3m = 4m + 14 please help
Alex777 [14]

Answer:

m=5

Step-by-step explanation:

3 0
3 years ago
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