Statistics And Probability

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. The is the middle value of a distribution.
2. is the value of the variable which has the maximum frequency.
3. Mode = 3 Median - 2 .
4. The algebraic sum of the deviations of a frequency distribution from its mean is .
5. cannot be determined graphically.
6. If the arithmetic mean of x, x + 3, x + 6, x + 9, and x + 12 is 10, then x = .
7. The median of first 10 prime numbers is .
8. If the mode of the data: 16, 15, 17, 16, 15, x, 19, 17, 14 is 15, hten x = .
9. If the S. D. of a set of observations is 8 and if each observation is divided by - 2, the S. D. of the new set of the observations will be .
10. If for the sample of size 60, we have the following information ∑xi2 = 18000 and ∑xi = 960, then the variance is .