Question

the dotplot below displays the number of math classes taken by a random sample of 35 students at a high school. math classes which letter represents the approximate location of the mean number of math classes? a b c d 2 3 4 5 6 number of math classes taken

Explanation:

Step1: Count dots per value

Let’s assume the dot counts (from the plot’s structure):

• 2: ~1 dot
• 3: ~6 dots
• 4: ~20 dots
• 5: ~7 dots
• 6: ~1 dot

Step2: Calculate total classes

Multiply each value by its count:
$2×1 + 3×6 + 4×20 + 5×7 + 6×1 = 2 + 18 + 80 + 35 + 6 = 141$

Step3: Compute mean

Divide total by 35 students:
$\frac{141}{35} ≈ 4.03$

Step4: Match to letter

The mean (~4.03) is near 4, which corresponds to letter B.

Answer:

B. (Letter B)