Tabulation, frequency distribution, bar/histogram, central tendenciesPractice Questions & MCQs
Practice Tabulation, frequency distribution, bar/histogram, central tendencies questions from Statistics (Class 9 Maths) - important MCQs with answers and step-by-step solutions. Solve the sample questions below, then practice the full set free on the RankByte app.
Tabulation, frequency distribution, bar/histogram, central tendenciesQuiz - Solve & Score
Q1. Pooja recorded the daily number of buses leaving a dairy farm, getting 28, 30, 9, 36, 26, 3, 36 (buses). What is the arithmetic mean of these 7 values?
- A.28
- B.168
- C.19.5
- D.24
Answer: D. 24
Sum = 28+30+9+36+26+3+36 = 168. Mean = sum / number of observations = 168/7 = 24.
Q2. Karan noted the runs scored by Karan in 8 innings, getting 16, 39, 7, 2, 29, 26, 23, 4 (runs). What is the arithmetic mean of these 8 values?
- A.20.5
- B.146
- C.18.25
- D.20.86
Answer: C. 18.25
Sum = 16+39+7+2+29+26+23+4 = 146. Mean = sum / number of observations = 146/8 = 18.25.
Q3. Meena measured the heights (in cm) of 7 saplings in a dairy farm, getting 12, 21, 5, 33, 11, 20, 28 (cm). What is the arithmetic mean of these 7 values?
- A.130
- B.19
- C.18.57
- D.21.67
Answer: C. 18.57
Sum = 12+21+5+33+11+20+28 = 130. Mean = sum / number of observations = 130/7 = 18.57.
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