Question

True or False

1.     T F Both S and R charts may be used to control the mean of a process.

2.     T F When sampling a process to establish the control limits for a control chart of an average, we should typically take somewhere between n= 1 to n=6 items for each of the k samples

3.     T   F The acronym ARL stands for acceptable run length

4.     T F We would identify a process as being out of control if 6 successive points fall on the same side of the centerline

5.     T F If we are estimating the standard deviation for an xbar chart with the standard deviation of the samples, we correct with b_n factor

Answer 1

(1) TRUE

S and R diagrams are utilized to screen the mean and variety of a procedure dependent on tests taken from the process at given occasions (hours, shifts, days, weeks, months, and so forth.). The estimations of the examples at a given time comprise a subgroup. Commonly, an underlying arrangement of subgroups is utilized to gauge the mean and standard deviation of a procedure. The mean and standard deviation are then used to create control limits for the mean and scope of every subgroup. Amid this underlying stage, the procedure ought to be in charge.

(2) TRUE

(3). FALSE

Because ARL = AVERAGE RUN LENGTH

(4) FALSE

BECAUSE RULE- 8 successive points fall on the same side of the centerline

(5) TRUE

the standard deviation(sigma) is to be estimated from the standard deviation of the samples.

ANSWERED

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