Analyzing Student Data from Colleges (2017-2021)

The question asks us to calculate the difference between the total number of students admitted in college S and the total number of students admitted in college Q, both from the year 2017 to 2021. We are given a table showing admitted (A) and left (L) students for five colleges (P, Q, R, S, T) over the years 2016 to 2021.

Step 1: Identify the Required Data

We need to find the number of students admitted (A) for college S and college Q for each year from 2017 to 2021. We will extract this data from the provided table.

Step 2: Calculate M - Total Students Admitted in College S (2017-2021)

M is the sum of students admitted in college S from 2017 to 2021.

M = Students admitted in S (2017) + Students admitted in S (2018) + Students admitted in S (2019) + Students admitted in S (2020) + Students admitted in S (2021)

M = $880 + 800 + 790 + 840 + 920$

Let's sum these values:

• $880 + 800 = 1680$
• $1680 + 790 = 2470$
• $2470 + 840 = 3310$
• $3310 + 920 = 4230$

So, $M = 4230$.

Step 3: Calculate N - Total Students Admitted in College Q (2017-2021)

N is the sum of students admitted in college Q from 2017 to 2021.

N = Students admitted in Q (2017) + Students admitted in Q (2018) + Students admitted in Q (2019) + Students admitted in Q (2020) + Students admitted in Q (2021)

N = $900 + 650 + 570 + 600 + 680$

Let's sum these values:

• $900 + 650 = 1550$
• $1550 + 570 = 2120$
• $2120 + 600 = 2720$
• $2720 + 680 = 3400$

So, $N = 3400$.

Step 4: Calculate M - N

Finally, we need to find the difference $M - N$.

$M - N = 4230 - 3400$

$M - N = 830$

Conclusion

The difference between the number of students admitted in college S and college Q from 2017 to 2021 is 830.

Revision Table: Key Calculations for College Students

Difference $M - N = 4230 - 3400 = 830$.

Additional Information on Data Interpretation

Data interpretation questions often require carefully extracting specific information from tables or graphs. It's important to:

• Read the question carefully to understand exactly which data points are needed (e.g., admitted vs. left, specific years, specific colleges).
• Identify the relevant rows and columns in the table or parts of the graph.
• Perform the requested calculation (sum, average, difference, ratio, percentage change, etc.) accurately.
• Be mindful of the time periods specified (e.g., 2017 to 2021 means including both 2017 and 2021).
• Double-check calculations to avoid errors.

This question specifically focused on the 'Admitted' students and required summing values over a specific range of years for two different colleges before finding the difference.