Variable Charts MCQ

Test your knowledge with important Variable Charts MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Variable Charts MCQs at Bissoy

• Moving range can only be calculated by the two successive observations.
  ক

  True

  খ

  False
• Which of this stands correct for the relation between the ARL for a shewhart control chart and the individual control chart ARL?
  ক

  ARLindividual control chart=1/ ARLshewhart control chart

  খ

  ARLindividual control chart= ARLshewhart control chart

  গ

  ARLindividual control chart≪ARLshewhart control chart

  ঘ

  ARLindividual control chart≫ ARLshewhart control chart
• The average number of points that must be plotted before an out-of-control point is plotted on an Individuals control chart?
  ক

  ARL

  খ

  ATS

  গ

  MTBF

  ঘ

  Hazard rate
• The center line for any individuals control chart represents the value equal to __________
  ক

  The process mean

  খ

  The moving range

  গ

  The mean of moving ranges

  ঘ

  The process standard deviation
• MR (Moving Range) is defined as
  ক

  The difference of highest observation and the lowest observation

  খ

  The difference between any two successive observations

  গ

  The difference between the highest observation and mean of observations

  ঘ

  The difference between the lowest observation and mean of the observations
• In the case of individuals control charts, which of these is used?
  ক

  Relative range

  খ

  Process standard deviation

  গ

  Mean of the highest observations

  ঘ

  Moving range
• In the case of automatic manufacturing, the sample size is ___________
  ক

  1

  খ

  2

  গ

  4

  ঘ

  Greater than 5
• The Shewhart control charts for sample size n=1 are called _________
  ক

  Single Sample control charts

  খ

  Stationary control charts

  গ

  Control charts for zero variance

  ঘ

  Control charts for individual measurements
• X bar and S chart are more accurate in predicting out-of-control situations than the x bar and R charts, in the case of high sample size.
  ক

  True

  খ

  False
• X bar chart should be interpreted before s chart if both are indicating out of control situations.
  ক

  True

  খ

  False
• Which of these is a name of s control chart?
  ক

  s2 Chart

  খ

  Process standard deviation chart

  গ

  σ Chart

  ঘ

  σ2 Chart
• The control charts based directly on the sample variance are called ____________
  ক

  s Control charts

  খ

  σ2 Control charts

  গ

  s2 Control charts

  ঘ

  x Charts
• Which of these is taken as the sample size while estimating process standard deviation, where sample size is variable?
  ক

  ni; Which is the highest among all sample sizes

  খ

  ni; Which is the lowest among all sample sizes

  গ

  ni=5

  ঘ

  ni; Which is the most frequently occurring among all the sample sizes
• Which of this is a situation when x bar and s charts should be utilized instead of x bar and R charts?
  ক

  When sample size is constant

  খ

  When sample standard deviation is less than 1

  গ

  When sample range is more than 1

  ঘ

  When sample size is variable
• X bar and R charts are highly favorable when the sample size is high.
  ক

  True

  খ

  False
• Process standard deviation is the mean of all sample standard deviations.
  ক

  True

  খ

  False
• What is the value of LCL for the s chart when the standard value for σ is not given?
  ক

  B5 s

  খ

  B4 s

  গ

  B6 s

  ঘ

  B3 s
• The center line of the s chart denotes ____
  ক

  Standard deviation of the process

  খ

  Mean of m number of standard deviations, where m is the number of samples

  গ

  c4 s

  ঘ

  B5 s
• The center line of the s chart with a standard value for σ given, denotes the value of _____
  ক

  B6 σ

  খ

  c4 σ

  গ

  B5 σ

  ঘ

  c5 σ
• Which of these formulas gives the exact equation for the UCL of s chart with a std. value for σ given?
  ক

  B6 σ

  খ

  B5 σ

  গ

  c4 σ

  ঘ

  c3 σ
• What is an unbiased estimator of unknown variance of a probability distribution?
  ক

  Sample mean

  খ

  Sample standard deviation

  গ

  Sample variance

  ঘ

  Sample range
• What does “s” denote in x bar and s charts?
  ক

  Sample

  খ

  Sample standard deviation

  গ

  Process standard deviation

  ঘ

  Statistics
• What is the estimator of standard deviation in the x bar and R charts?
  ক

  Mean of one sample

  খ

  Mean of whole process

  গ

  Range

  ঘ

  Process capability ratio
• Which of these should be plotted on the x bar chart?
  ক

  Counts

  খ

  Defects

  গ

  Problems Solved

  ঘ

  Measurements
• A permanent change in the sample size is made only because of cost or because has exhibited good stability and fewer resources are allocated for process monitoring.
  ক

  True

  খ

  False
• A mixture pattern in the control chart points is exhibited when __________ occurs.
  ক

  Operator fatigue

  খ

  Change of raw materials

  গ

  Continuous wear of tool

  ঘ

  Adjustments too often responding to random variation
• If the probability of one point plotting out of control limits of a X bar control charts is 0.0143, what will be its expected number of individual units sampled with subgroup size 8?
  ক

  559

  খ

  544

  গ

  530

  ঘ

  580
• Slope of OC curve for x bar chart will _________ when sample size is increased.
  ক

  Decrease

  খ

  Increase

  গ

  Remain same

  ঘ

  Decrease then increase
• If the sample size is 7 and the Average run length is 122 for a process, what will be the expected number of the individual units sampled?
  ক

  850

  খ

  854

  গ

  867

  ঘ

  844
• The probability of not detecting “an in-control shift” of the mean of the process is said to be the _____
  ক

  α – Risk

  খ

  β – Risk

  গ

  γ – Risk

  ঘ

  δ – Risk