Question

the following list gives the number of defects found in 30 samples of 100 electronic assemblies taken on a day over one month. plot these data on a run chart, computing the average value (center line). how do you interpret the chart?
samples 1 - 10 4 7 7 5 14 12 7 3 5 2
samples 11 - 20 5 5 5 7 6 2 6 6 4 5
samples 21 - 30 7 6 5 7 7 1 2 6 3 3
find the average value. round your answer to one decimal place.
choose the correct graph for the data provided.
the correct graph is select

• select-

graph a
graph b
graph c
graph d

Explanation:

Step1: Sum all data values

$4 + 7+7 + 5+14+12+7+3+5+2+5+5+5+7+6+2+6+6+4+5+7+6+5+7+7+1+2+6+3+3=159$

Step2: Calculate the average

The average $\bar{x}=\frac{\text{Sum of values}}{\text{Number of values}}$. Here, the number of values is $n = 30$. So $\bar{x}=\frac{159}{30}=5.3$

Since the graphs are not provided, we can only answer the average - value part.

Answer:

$5.3$