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Shkiper50 [21]
3 years ago
15

In a multiple-column record of a data file, ______ represent different variables and _______ represent different cases

Computers and Technology
1 answer:
Nookie1986 [14]3 years ago
4 0

Answer:

columns, rows

Explanation:

In Computer programming, a atabase schema refers to the logical design of the database while the database instance refers to a snapshot of the data found in a database at a given instant in time.

Basically, in database management, the term "schema" is used to denote a representation of data while the term "instance" is used to denote an instance of time.

A database schema is a structure which is typically used to represent the logical design of the database and as such represents how data are stored or organized and the relationships existing in a database management system. There are two (2) main categories of a database schema; physical database schema and logical database schema.

Also, a database instance is a snapshot of the data in the database at a given instant in time and as such represents an operational database by following the conditions, validation and constraints set for a database management system.

These data can be stored or organized in a database management system through the use of multiple-column record formats.

In a multiple-column record of a data file, columns represent different variables and rows represent different cases (respondents) such as experimental data, independent observations etc.

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The goal of this project is to become familiar with basic Python data processing and file usage. By the end of this project, stu
xenn [34]

Answer:

Explanation:

The question does not provide any actual data to manipulate or use as input/guidline therefore I have taken the liberty of creating a function for each of the question's points that does what is requested. Each of the functions takes in a list of the needed data such as a list of field test averages for part 1, or a list of field tests for part 2, etc. Finally, returning the requested output back to the user.

import matplotlib.pyplot as plt

from collections import Counter

def best_pilot(field_test_average):

   return max(field_test_average)

def find_average(field_test):

   average = sum(field_test) / len(field_test)

   return average

def create_histogram(field_test_colors):

   count_unique_elements = Counter(field_test_colors).keys()

   plt.hist(field_test_colors, bins=len(count_unique_elements))

   plt.show()

def average_name_lengths(first, last):

   first_name_sum = 0

   last_name_sum = 0

   count = 0

   for name in first:

       first_name_sum += len(name)

       count += 1

   for name in last:

       last_name_sum += len(name)

   first_name_average = first_name_sum / count

   last_name_average = last_name_sum / count

   return first_name_average, last_name_average

7 0
3 years ago
Users of an access point share the transmission capacity of the access point. The throughput a user gets is called the ________.
sdas [7]

Solution:

Users of an access point share the transmission capacity of the access point. The throughput a user gets is called the bits per seconds.

Thus this is the required answer.

6 0
3 years ago
How to print something nad input on same line python
Serhud [2]
To get everything on one line with two inputs is not (easily) achievable, as far as I know. The closest you can get is: print 'I have', a=input() print 'apples and', p=input() print 'pears. '
7 0
2 years ago
What type of printer heats toner to adhere it to the paper? inkjet . impact. 3D. laser.
Luden [163]

Answer:

laser

Explanation:

These are well known printer types now.  Let's review how they work to determine in which does heat plays a role.

inkjet: inkjet printers are printer throwing ink at the paper in the form of little drops.  No heat involved here.

impact: That's the oldest technology, where a printing head is moving left and right to punch a printing ribbon and transfer ink onto the paper.  No heat involved.

3D: 3D printers don't usually use paper... as they use other materials to create a 3D representation of a model.  Heat is involved in the melting of the material before it's placed on the building model.  But no paper involved here.

laser: laser printers are working very much like a photocopier machine... memorizing the pattern to be printed, then transferring it onto paper... using heat.

8 0
3 years ago
Integral 3t+ 1 / (t + 1)^2​
Verizon [17]

Answer:

3ln|t+1|+\frac{2}{t+1} +C

Explanation:

We'll be using u-substitution for this problem.

Let

u=t+1\\du=dt

Substitute

\int\limits {\frac{3u-2}{u^2}} \, du

Split the fraction

\int\limits {\frac{3u}{u^2} } \, du -\int\limits {\frac{2}{u^2} } \, du

Move the constants out

3\int\limits {\frac{u}{u^2}du -2\int\limits {u^{-2}} \, du

Simplify

3\int\limits {\frac{1}{u}du -2\int\limits {u^{-2}} \, du

Integrate

3ln|u|+\frac{2}{u} +C

Substitute

3ln|t+1|+\frac{2}{t+1} +C

5 0
3 years ago
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