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Gala2k [10]
2 years ago
12

Pls help!!

Computers and Technology
1 answer:
alexira [117]2 years ago
7 0

Answer:

4.24

Explanation:

First you find the mean of the data set, which is 7. Then to find standard deviation you have to follow the formula which tells you to subtract the mean from each number under the square root : √(2 - 7)^2 + (9 - 7)^2 + (10 - 7)^2 + (4 - 7)^2 + (8 - 7)^2 + (4 - 7)^2 + (12 - 7). Once you solve the parenthesis you square it, once you square it the negatives won't matter. That will leave you with this : √(25 + 4 + 9 + 9 + 25). The formula tells you to find the sum of those numbers (which is 72) then subtract one from how many numbers there are, 5 - 1 = 4, and divide your sum by that number. So 72 / 4 = 18. Then you find the square root of 18 and that becomes your answer.

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Edison wants to purchase a new computer and go to the Caribbean for spring break. The computer is priced at $1,299, and the vaca
Otrada [13]

Answer:

This question is imcomplete, here is the complete question

Edison wants to purchase a new computer and go to the Caribbean for spring break. The computer is priced at $1,299, and the vacation is priced at $750. He has only $1,537 in his checking account, so he cannot afford to purchase both. After much thought, Edison buys the computer and writes a check for $1,299. Identify what role money plays in each of the following parts of the story. Hint: Select each role only once. Role of Money Medium of Exchange Unit of Account Store of Value Edison can easily determine that the price of the computer is more than the price of the vacation. Edison has $1,537 in his checking account. Edison writes a check for $1,299.

Identify what role money plays in each of the following parts of the story.

Explanation:

Brian can effortlessly determine and conclude that the cost of the computer is more than that of the price of the vacation.= Unit of Account

Brian has a total amount of $1,537 in his checking account.= Store of value

Brian then writes a check for $1,299.= Medium of Exchange

5 0
3 years ago
You need to design a data storage scheme for Hayseed Heaven library data system. There are several hundred thousand large data r
Alekssandra [29.7K]

Answer:

Make use of hash tables

Explanation:

The appropriate thing to use for this should be a hash table.

A Hash Table can be described as a data structure which stores data in an associative manner. In a hash table, data is stored in an array format, where each data value has its own unique index value. Access of data becomes very fast if we know the index of the desired data. So we can perform Hashing on ISBN Number since its unique and based on the Hash Function w ecan store the Information record.

There is no requirement for printing the file in order - HashTables dont store the data in order of insertions, so no problems with that

It becomes a data structure in which insertion and search operations are very fast irrespective of the size of the data. So Querying books details can be fast and searching will take less time.

It can also be pointed out that it wont be too expensive for Hardware implemtation as HashTables stores data based on Hash Functions and memory consumption is also optimal which reduces memory wastages.

7 0
3 years ago
Parameters are treated as variables within a function.
Amanda [17]

Answer:

In C programming you can only pass variables as parameter to function.

Explanation:

3 0
3 years ago
Create a dictionary that will hold AT LEAST 3 categories for food with at least 3 foods for each category. E.g. Fruits --> Ap
RSB [31]

Answer:

  1. food_category = {
  2.    "Fruits": ["Apple", "Strawberries", "Orange"],
  3.    "Vegetables": ["Carrots", "Peas", "Onions"],
  4.    "Meats": ["Chicken", "Beef", "Mutton"]
  5. }
  6. for cat in food_category:
  7.    output = cat + ": "
  8.    for food in food_category[cat]:
  9.        output += food + ", "
  10.    print(output)
  11. answer = input("Do you want to add category or food (Y - Yes  N - No): ")
  12. while(answer == "Y"):
  13.    choice = input("New Category (N) or New Food (nf): ")
  14.    
  15.    if(choice == "N"):
  16.        new_cat = input("Enter new category name: ")
  17.        if(new_cat not in food_category):
  18.            food_category[new_cat] = ""
  19.    elif(choice == "nf"):
  20.        cat = input("Enter category: ")
  21.        new_food = input("Enter new food name: ")  
  22.        food_category[cat].append(new_food)
  23.    
  24.    answer = input("Do you want to add new category or food (Y - Yes N - No): ")
  25. print("All food categories: ")
  26. for cat in food_category:
  27.    print(cat)
  28. selected_cat = input("Select a category to view the food list: ")
  29. output = ""
  30. for food in food_category[selected_cat]:
  31.    output += food + ", "
  32. print(output)

Explanation:

The solution code is written in Python 3.

Firstly, create a food category dictionary data structure (Line 1 -5). Next, display all the food category and the food in each category (Line 7 - 11)

Next prompt user to feedback if they wish to add new category or new food (Line 13).

While the answer is yes prompt user to enter their choice, either category or food and use if else if statements to handle the choice made by the user. If the choice is new category, prompt user to enter new category name and check if the new category is already exist in the dictionary. If not, add that category to dictionary (Line 18 - 21).

If the choice is food, nf, prompt user to input food category and enter the new food name and add it to the food_category list (Line 22 - 25).

After that prompt user to enter if they wish to continue to add new data (Line 27).

After collecting all info from user, write a for loop to display all the categories (Line 29 - 31).

At last, prompt user to select a category and display all the food of the selected category (Line 33 - 37).

8 0
3 years ago
In a _______ format, the date line and the signature block are centered.
kakasveta [241]
The answer to this is C. Modified block
6 0
3 years ago
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