Question

find the mean, median and mode of the set of data.
30, 50, 10, 80, 40, 50, 40, 20, 40
mean:
median:
mode:
remember that you can use a comma to separate your answers if you have more than one mode.

Explanation:

Step1: Calculate the mean

Sum the data: $30+50+10+80+40+50+40+20+40 = 360$. Divide by count (9): $\frac{360}{9}=40$.

Step2: Find the median

Sort data: $10,20,30,40,40,40,50,50,80$. Middle value is 5th term: 40.

Step3: Identify the mode

Count frequencies: 40 appears 3 times (most frequent).

Answer:

mean: 40
median: 40
mode: 40