Educational Research Institute - ERI

Data Analyst Interview

Sharaxaadda Qodobbada Qodobka ee Xogta

Hordhac
Dokumentigan waa koob ka kooban qodobbada muhiimka ah ee la xariiri karo wadashaqaynta falanqaynta xogta (Data Analyst Interview). Waxa uu si faahfaahsan u soo koobayaa mawduucyada la isweydiiyo badanaa wadashaqaynta, iyo habraacyada loo baahan yahay si loo jawaabo su'aalaha.

Qodobbada Qodobka

1) SQL
- Aggregations: Isticmaalka shaqooyinka la koobayo sida SUM, COUNT, AVG, MAX iyo GROUP BY.
- Joins: Sida loo isticmaalo isku-darka jadwalka (INNER, LEFT, SELF).
- CASE WHEN: Xisaabinta shuruudaha gudaha SQL.
- Ranking Functions: Shaqooyinka sida RANK(), DENSE_RANK(), ROW_NUMBER().
- Window Functions: Isticmaalka OVER(PARTITION BY...) si loo xisaabiyo tirooyinka kooxaha.

2) Baaritaanka Xogta
- Clarify the Drop: Weydiinta xogta ku saabsan hoos u dhaca metric-ka.
- Internal Factors: Baaritaanka sababaha gudaha sida qaladka trackiga ama siideynta taasheeyad cusub.
- External Factors: Baaritaanka sababaha dibadda sida xilliyada iyo dhacdooyinka waaweyn.
- Summarize Findings: Koobid aragtidaada iyo tallaabooyinka soo socda.

3) Metrics-ka Guusha
- Understand Goals: Fahmidka ujeedada shirkadda iyo alaabta.
- North Star Metric: Qeexida hal metric oo muhiim ah oo matala guusha.
- Funnel Thinking: Qaybinta metrics-ka si isdaba-joog ah.

4) Dhaqanka (Behavioral)
- S.T.A.R Method: Isticmaalka habka Situation, Task, Action, Results si loo sharaxo mashruuca ugu saamaynta badan.

Guud ahaan
Dokumentigan waxa uu bixiyaa koob qeexeed oo ku saabsan qodobbada la isweydiiyo badanaa wadashaqaynta falanqaynta xogta. Waxa uu si faahfaahsan u sharaxayaa mawduucyada SQL, baaritaanka xogta, qeexida metrics-ka guusha, iyo jawaab celinta su'aalaha dhaqanka. Qodob kasta waxa uu leeyahay tusaalooyin iyo habraacyo wax ku ool ah si loo fahmo si fiican.

https://vt.tiktok.com/ZShTktyfj/

Halkan hoose waa sharaxad kooban oo ardaydu ka faa’iidaysan karaan marka ay dooranayaan barnaamijka ku habboon falanqaynta xogta:

Sharaxad Kooban oo Faa’iido Leh:

Barnaamijyada SPSS iyo Power BI waxay yihiin labo qalab oo muhiim ah oo lagu falanqeeyo xogta, balse waxay u adeegaan ujeeddooyin kala duwan.

SPSS waxa uu ku habboon yahay ardayda iyo cilmi-baarayaasha doonaya inay falanqeeyaan xog cilmiyeed sida su’aalo la qaaday, tirakoobyo, iyo daraasado. Waa sahlan in la barto, waxaana si gaar ah ugu habboon ardayda sameynaya thesis ama research project.

Power BI wuxuu ku habboon yahay shirkadaha doonaya inay si muuqaal ah u eegaan xogta ganacsiga, sida iibka, KPI, iyo warbixinada maalinlaha ah. Wuxuu la shaqeeyaa Excel iyo xogaha kale si toos ah (real-time dashboards).

Talooyin:

Ardayda jaamacadda: Isticmaal SPSS haddii aad la shaqeyso xog cilmiyeed.

Haddii aad rabto inaad la falgasho shirkad ama xog ganacsi: Dooro Power BI.

This diagram categorizes various types of research based on six different criteria: objective, outcome, logic, process, inquiry mode, and concept. It highlights how research can be descriptive, exploratory, experimental, fundamental, applied, deductive, inductive, qualitative, quantitative, conceptual, or empirical depending on the approach and purpose.

1. On the basis of objective: Research is classified as:

Descriptive: Aims to describe characteristics or functions.

Exploratory: Investigates new or unclear problems.

Experimental: Tests hypotheses under controlled conditions.

2. On the basis of outcome:

Fundamental Research: Seeks to gain deeper theoretical understanding.

Applied Research: Focuses on practical problem-solving.

3. On the basis of logic:

Deductive Research: Begins with a theory or hypothesis and tests it.

Inductive Research: Develops theories from observations or data.

4. On the basis of process:

Qualitative Research: Focuses on non-numerical data, such as words and meanings.

Quantitative Research: Uses measurable data and statistical analysis.

5. On the basis of inquiry mode:

Repeats Deductive and Inductive types, focusing on the method of investigation.

6. On the basis of concept:

Conceptual Research: Based on theories and concepts.

Empirical Research: Based on observations and experiments.

Understanding these classifications helps researchers select the most appropriate method for academic, scientific, or practical investigations, ensuring that their approach aligns with their research goals and the nature of their questions.
Educational Research Institute - ERI

TYPES OF VARIABLES

3 key types of variables: Independent, Dependent & Controlled, using a plant experiment as an example

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