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The objective of a solution implemented was to increase the number of customer calls resolved per hour. When using basic statistical sampling concepts, what does the business analyst (BA) need to consider?
Metrics and KPIs is correct answer. As per BABOK v3 8.1.4.3, when defining performance measures (which may be called as KPIs or metrics), business analyst may employ basic statistical sampling concepts. So reversely, when employing basic statistical sampling concepts, BA need to consider defining performance measures.
Frequency and timing needs to be considered when collection performance measures data. (BABOK v3 8.1.4.3), not when using basic statistical sampling concepts.
While frequency and timing (Option B), financial analysis (Option C), and benchmarking and market analysis (Option D) may also provide valuable insights, they are not specifically focused on basic statistical sampling concepts, which are more directly applicable to measuring and evaluating performance metrics such as the number of customer calls resolved per hour. Therefore, Option A is the most relevant choice in this context.
8.1.4: When defining performance measures, business analysts may employ basic
statistical sampling concepts:
• Frequency and Timing: the frequency and timing with which
measurements are taken may have an effect on the outcome.
8.1.4: When defining performance measures, business analysts may employ basic
statistical sampling concepts.....
When collecting performance measures, business analysts consider:
• Volume or Sample Size: a volume or sample size appropriate for the
initiative is selected. A sample size that is too small might skew the results
and lead to inaccurate conclusions. Larger sample sizes may be more
desirable, but may not be practical to obtain.
• Frequency and Timing: the frequency and timing with which
measurements are taken may have an effect on the outcome.
• Currency: measurements taken more recently tend to be more
representative than older data.
Frequency and Timing is not a technique. But in Metrics and Key Performance Indicators (KPIs) you can use Frequency and Timing as base. So answer is A.
Metrics and key performance indicators measure the performance of solutions, solution components, and other matters of interest to stakeholders (like Frequency and Timing).
Babok page 168 8.1.4
BA may employ basic statistical sampling, ehen collecting performance measure BA may CONSIDER: volume or sample size, frequency and timing, currency
B. (8.1.4.3)
When defining performance measures, business analysts may employ basic
statistical sampling concepts.
When collecting performance measures, business analysts consider:
• Frequency and Timing: the frequency and timing with which
question says "when using basic statistical sampling concepts" - B has to be the answer. while taking sampling time and frequency is the key consideration. That's the essence of a sampling process. The answer has to be B.
Option A is correct. A. Metrics and Key Performance Indicators (KPIs) is what the BA will use to make meaning of the data.
Frequency and Timing is only a factor that affects the quality and reliability of performance measures. BABOK says: "Frequency and Timing: the frequency and timing with which measurements are taken may have an effect on the outcome."
Read Metrics, Indicator and KPI in BABOK 10.28.2.
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