Question

find the mean of each data set. mean of data set a:

Explanation:

First, identify the values and their frequencies in Data Set A from the dot plot:

• Value 3: 4 dots
• Value 4: 4 dots
• Value 5: 4 dots
• Value 6: 4 dots

Calculate the total sum:
$3×4 + 4×4 + 5×4 + 6×4 = (3+4+5+6)×4 = 18×4 = 72$

Calculate the total number of data points:
$4+4+4+4 = 16$

Compute the mean:
$\frac{72}{16} = 4.5$

(Note: Data Set B is incomplete in the provided image, so only Data Set A's mean is calculated.)

Answer:

4.5