እነሆ መልሶቹ:
ክፍል I: ለትክክለኛ መግለጫዎች እውነት (TRUE) እና ለስህተት መግለጫዎች ሐሰት (FALSE) ይጻፉ። (10 ነጥቦች)
- Inferential Statistics is the branch of statistics that involves drawing conclusions about a population based on information contained in a sample taken from that population.
- TRUE (ይህ የ Inferential Statistics ትክክለኛ ፍቺ ነው።)
- Census is the method or process of selecting sample from the population.
- FALSE (የሕዝብ ቆጠራ (Census) ማለት ከጠቅላላው ሕዝብ ውስጥ መረጃ መሰብሰብ እንጂ ናሙና መምረጥ አይደለም።)
- Recorded information in its original collected form, whether it will be counts or measurements, is referred to as raw data.
- TRUE (ይህ የጥሬ መረጃ (raw data) ትክክለኛ ፍቺ ነው።)
- The type of graph used to represent data is determined by the type of data collected and by the researcher's purpose.
- TRUE (የግራፍ አይነት የሚወሰነው በተሰበሰበው የመረጃ አይነት እና በምርምሩ ዓላማ ነው።)
- An arrangement of objects without regard to order is called Permutation.
- FALSE (ትዕዛዝን ከግምት ውስጥ ሳያስገባ የነገሮች ዝግጅት Combination ይባላል እንጂ Permutation አይደለም። Permutation ትዕዛዝን ግምት ውስጥ ያስገባል።)
ክፍል II: በ"B" ስር ያሉትን ምላሾች በ"A" ስር ካሉት ግቢዎች ጋር ያዛምዱ። (20 ነጥቦች)
- The result of a single trial → H. Outcome
- Generating an outcome → J. Experiment
- Subset of the sample space → A. Event
- An event having single element → I. Elementary event
- Cannot happen at the same time → F. Mutually Exclusive Events
- The same chance of occurring → G. Equally Likely Events
- Harmonic Mean → B. Average of distance/speed/motion
- Positively skewed distribution → D. Majority of the observations have a value below the mean
- Mesokurtic → C. Not very high peaked or flat-topped distribution
- Coefficient of Variation → E. The ratio of mean to the standard deviation (ማስታወሻ: የ Coefficient of Variation ትክክለኛ ቀመር የ standard deviation እና mean ጥምርታ ነው። እዚህ ላይ የተገለጸው የተገላቢጦሽ ነው። ነገር ግን ከቀረቡት አማራጮች ውስጥ በጣም ቅርብ የሆነው ይህ ነው።)
ክፍል III: ከቀረቡት አማራጮች ውስጥ ምርጡን መልስ ይምረጡ። (30 ነጥቦች)
- Researchers are using descriptive statistics if they are using their results to:
- D. Describe the data they actually collected. (Descriptive statistics የተሰበሰበውን መረጃ ለመግለጽ ያገለግላል።)
- A researcher is interested in the travel time Rift Valley University students to college. A group of 50 students is interviewed. Their mean travel time in 16.7 minutes is an example of a(n):
- B. Statistic (ከናሙና (sample) የተገኘ መለኪያ ስታቲስቲክስ (statistic) ይባላል።)
- Statistical techniques that summarize and organize the data are classified as:
- C. Descriptive statistics (መረጃን የሚያጠቃልሉ እና የሚያደራጁ ስታቲስቲካዊ ዘዴዎች Descriptive statistics ይባላሉ።)
ሌላ ጥያቄ ካለዎት ይላኩልኝ 📸