To find out how many students said they text 50-100 times a day, we can use the percentage given in the table for that range.
From the table, we see that 75 percent of the surveyed students fall within the 50-100 text messages per day category.
The total number of students surveyed is 4,000.
To calculate the number of students who text 50-100 times a day:
\[ \text{Number of students} = \text{Total students} \times \text{Percentage} = 4000 \times 0.75 \]
Calculating that:
\[ 4000 \times 0.75 = 3000 \]
Thus, 3,000 students said they text 50-100 times a day.