Question 10.

**10.**
A group of students made the following scores on a 10-item quiz in
psychological statistics: {5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10} What is
the mean score? (Points : 4)

6.6

7.2

7.8

8.7

Question 11. **11.** A group of students made the
following scores on a 10-item quiz in psychological statistics: {5, 6,
7, 7, 7, 8, 8, 9, 9, 10, 10} What is the median score? (Points : 4) |
6 7 8 9 |

Question 12. **12.** A group of students made the
following scores on a 10-item quiz in psychological statistics: {5, 6,
7, 7, 7, 8, 8, 9, 9, 10, 10} What is the mode? (Points : 4) |
5 7 8 9 |

Question 13. **13.** A group of students made the
following scores on a 10-item quiz in psychological statistics: {5, 6,
7, 7, 7, 8, 8, 9, 9, 10, 10} What is the range of scores? (Points : 4) |
5 6 7 11 |

Question 14. **14.** A group of students made the
following scores on a 10-item quiz in psychological statistics: {5, 6,
7, 7, 7, 8, 8, 9, 9, 10, 10} What is the variance, treating these scores
as a sample? (Points : 4) |

1.53

1.60

2.33

2.56