9 class statistics

NAME

1.The ratio of the sum of observations and the total number of observations is called:

• a. Mean
• b. Median
• c. Mode
• d. Central tendency

2.The mean of x+2, x+3, x+4 and x-2 is:

• a. (x+7)/4
• b. (2x+7)/4
• c. (3x+7)/4
• d. (4x+7)/4

3.The median of the data: 4, 6, 8, 9, 11 is

• a. 6
• b. 8
• c. 9
• d. 11

4.The median of the data: 155, 160, 145, 149, 150, 147, 152, 144, 148 is

• a. 149
• b. 150
• c. 147
• d. 144

5.The median of the data: 17, 2, 7, 27, 15, 5, 14, 8, 10, 24, 48, 10, 8, 7, 18, 28 is:

• a. 10
• b. 24
• c. 12
• d. 8

6.The mode of the given data: 4, 6, 5, 9, 3, 2, 7, 7, 6, 5, 4, 9, 10, 10, 3, 4, 7, 6, 9, 9 is;

• a. 7
• b. 9
• c. 10
• d. 6

7.The value which appears very frequently in a data is called:

• a. Mean
• b. Median
• c. Mode
• d. Central tendency

8.The collection of information, collected for a purpose is called:

• a. Mean
• b. Median
• c. Mode
• d. Data

9.The mean of the data 2, 3, 4, 5, 0, 1, 3, 3, 4, 3 is

• a. 2
• b. 2.2
• c. 2.4
• d. 2.8