Data Analytics in Excel Test

Some friends live in adjacent apartments in a building in Central Perk, New York. We want to write a function to search the apartment number by name. Which of the following functions should we use?

We have two Excel files with organization data. One file has Organization ID and Organization Name fields, whereas the second file has Organization ID, Organization Name and Country fields. We wrote a query to retrieve the data from both files. Here’s a sample of the data retrieved:

We want to ensure Organization ID field is unique. Which of the following is the ideal solution that ensures Organization ID field is unique while retaining Country data?

A: Select the Organization ID and Country columns, and then click Keep Duplicates.
B: Select the Organization ID and Country columns, and then click Remove Duplicates.
C: Use Group BY function to group the rows by Organization ID. Specify output columns for Organization Name and Country using MAX operation.
D: Select Organization ID column and then click Remove Duplicates. Then specify output columns for Country using MAX operation.

Here’s a sample Excel data source:

Here’s the expected data format: 

Which of the following is the correct way to transform the data from the query editor to achieve the result?

A: Columns to Select: Student Only
B: Columns to Select: Student and Student ID
C: Columns to Select: Primary and Secondary
D: Command to Use: Pivot Column
E: Command to Use: Reverse Rows
F: Command to Use: Unpivot Columns

We are looking to find the contact number of the only blood donor with blood group O-. Which function should we use to look up the correct contact number? Here's the documentation for VLOOKUP: =VLOOKUP(lookup value, range containing the lookup value, the column number in the range containing the return value, Approximate match (TRUE) or Exact match (FALSE)).

A: =VLOOKUP("O-", A1:E10, 3, TRUE)
B: =VLOOKUP("O-", A1:E10, 3, FALSE)
C: =VLOOKUP("O-", D1:D10, 4)
D: =VLOOKUP("O-", D1:D10, 3)
E: =VLOOKUP("O-", A1:E10, 4, TRUE)
F: =VLOOKUP("O-", A1:E10, 4, FALSE)
G: =VLOOKUP("Kane", A1:E10, 4)

Two companies A and B hired developers from the year 2001 to 2005. The given bar graph shows the hiring details. 

Now select the statements that are true based on the given details.

A: The data given for Company A is skewed to the left.
B: The data given for Company B is skewed to the right.
C: The data given for Company A is skewed to the right.
D: For Company B, mean and mode are equal.
E: For Company B, mean is equal to median but less than mode.
F: For Company A, median is less than mode but greater than mean.

Saffi, one of the popular schools in San Francisco did a school wide study of the students in middle school. The study found that there is a negative correlation between the time spent on Facebook per day by students and their academic achievement. How can we understand the results of this study?

A: An increase in time spent on Facebook per day causes a drop in the academic achievement of students at the middle school level.

B: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at Saffi. 

C: An increase in the time spent on Facebook per day causes a drop in the academic achievement of students at Saffi. 

D: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at the middle school level.