Statistics of a certain test conducted to determine a disease are given in the table.
The number of persons actually having the disease are
Solution:
To determine the number of persons who actually have the disease, we need to consider:
True Positives (TP): People who actually have the disease and tested positive → 8
False Negatives (FN): People who actually have the disease but tested negative → 3
Since these two categories represent all people who actually have the disease, the total number of such persons is:
Total actual disease cases = True Positives + False Negatives
= 8 + 3
= 11
Final Answer: (a) 11
Study the table and answer the given question.
Number of students admitted in 5 different schools during 5 given years :
If 40% of the total number of students admitted in schools A, B and C together in 2024 are boys, then the total number of girls admitted in schools A, B and C together in 2024 is :
Study the table and answer the given question.
Number of students admitted in 5 different schools during 5 given years :
The average number of students admitted in schools B, C, D and E in 2021 is :
Read the following graph and answer the question :
Number of computers sold by dealers A, B, C and D in the years 2022 and 2023.
The average number of computers sold by dealers B and D in 2023 is what percent more than the average number of computers sold by dealers A, C and D in 2022 ?
Marks of two students, Simi and Shally in a unit test out of 50 are given. Based on this table, which of the following statements is wrong?
| Subject | Marks of Simi | Marks of Shally |
| English | 30 | 35 |
| Hindi | 45 | 42 |
| Mathematics | 48 | 50 |
| Science | 38 | 38 |
| Social Science | 25 | 40 |
Refer the table to answer the question.
SALE OF CARS (IN LAKH) | YEAR 2009 | YEAR 2010 | YEAR 2011 |
MARUTI | 1.25 | 1.8 | 1.95 |
HONDA | 1.3 | 4.2 | 5.5 |
HYUNDAI | 1.55 | 1.35 | 2.3 |
Which of the company has highest average sales of car during the period 2009-11?
Table – Weekly Fuel Usage (lines)
Vehicle | Mon | Tue | Wed | Thu | Fri |
Truck1 | 18 | 20 | 22 | 21 | 19 |
Truck 2 | 25 | 24 | 26 | 23 | 24 |
What is the overall average daily fuel usage for both trucks?
Table – Monthly Sales (in ₹1000)
Salesperson | Jan | Feb | Mar | Apr |
P | 50 | 60 | 70 | 55 |
Q | 65 | 68 | 62 | 64 |
What are the average monthly sales of Q?
Study the table and answer the question.
Number of New admission and number of TC issued in four schools M, N, O and P in different years are given in the table.
During 2018 to 2020, which school has saw the maximum increase in the number of students?
The given table shows the number of employees employed by different organizations in the given years.
What is the respective ratio of the total number of employees employed by organization U in the years 2010 and 2012 to the total number of employees employed by organization P in the same years respectively?
Study the following table carefully and then answer the given question.
The number of candidates applying for an interview for a post in different banks and the percentage of candidates who are successful.
What was the percentage of candidates who were not successful for Bank K, compared to the number of candidates who were not successful for Bank I?
