Number of students

Question

A random group of students were asked to name their favorite color. The results of the survey are recorded down below. The total school population is 525 students.

 

Blue---- 27 students 

red---- 21 students 

brown--- 21 students 

green------- 19 students 

orange ------- 17 students 

 

If the survey results are a fair representation of the entire school population, predict the total number of students in the school that would choose each color as their favorite, complete the chart below

 

Blue---- ? students
red---- ? students
brown--- ? students  
green-------  ? students
orange--- ? students 

 

Answer 1

You can use proportion to figure this out as the sample is large compared to the population (105 vs 525).

 

Red = (21÷105) x 525 = 105

 

I chose Red so that it divides nicely.  You can complete the problem for following the proportion for the other colors.