If you have 280 data points, how many classes would 2^k greaterthanorequalto n R

Question

If you have 280 data points, how many classes would 2^k greaterthanorequalto n Rule suggest? A) 6 B) 7 C) 8 D) 9 2. The distribution pictured below is A. Bimodal and skewed right B. Bimodal and skewed left C. Skewed right D. Skewed left 3. The median of 600, 800, 1000, 1200 is A. 800 B. 1000 C. 900 D. 950 4. Twelve randomly-chosen students were asked how many times they had missed class during a certain semester, with this result: 3, 2, 1, 2, 1, 5, 9, 1, 2, 3, 3, 10. The geometric mean is: A.^12 Squareroot 42 B. 2.604 C. 1.517 D 2 Squareroot 97200 Which is a characteristic of the standard deviation? A. It is not greatly affected by outliers B. It is measured in the same units as the mean C. It measures dispersion around the median D. It has a natural, concrete meaning A smooth distribution with one mode is negatively skewed (skewed to the left). The median o distribution is $65. Which of the following is a reasonable value for the distribution mean? A. $76 B. $54 C. $81 D. $65

Explanation / Answer

1) option D

2)option A is correct

3) option C is correct as median =(n+1)/2 th value =(2.5 th value =(800+1000)/2 =900

4)option B: as geo mean =(x1*x2*,...x12)1/12

5)option B

option B is correct as mean will be less then median for negative skewed

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