Distribution Math

Given above are marks obtained by 20 students in Math out of 25, presented in grouped frequency distribution table. Identify the lower class boundary for each class.

• 11, 16, 21

• 11.5, 16.5, 21.5

• 10.5, 15.5, 20.5

• 15.5, 20.5, 25.5

Sam had 15 soccer games this season. His team scored the following goals for each game:

1,2,0,3,1,1,0,2,1,3,0,2,1,1,3

What is the frequency of Sam's team scoring 0 goals?

• 15

• 6

• 3

• 4

Given above are marks obtained by 20 students in Math out of 25. How many student score 19?

• 2

• 6

• 7

• 9

Given both table above are marks obtained by 20 students in Math out of 25. What are different between the tables?

• A: Cumulative frequency

  B: Ungrouped frequency distribution table

• A: Ungrouped frequency distribution table

  B: Grouped frequency distribution table

• A: Ungrouped frequency distribution table

  B: Cumulative frequency

• A: Grouped frequency distribution table

  B: Cumulative frequency

Sam's team has scored the following numbers of goals in recent games presented as raw data.

2, 3, 1, 2, 1, 3, 2, 3, 4, 5, 4, 2, 2, 3

What is the mode value of the score?

• 2

• 3

• 4

• 5

Sam's team has scored the following numbers of goals in recent games presented as raw data.

2, 3, 1, 2, 1, 3, 2, 3, 4, 5, 4, 2, 2, 3

What is the median value of the score?

• 2

• 3

• 2.5

• 3.5

The dotplot shows the results of rolling a pair of 6-sided dice and finding the sum of the up faces 100 times. Describe the peak(s) of the graph.

• Clear peak at 7

• Clear peak at 2

• There are multiple peaks at 6 and 7

• There are no peaks

The following parallel dotplots show the total family income of randomly chosen individuals from Indiana (38 individuals) and New Jersey (44 individuals). Which of the following correctly compares the center of the distribution?

• The Indiana distribution is roughly symmetric, while the New Jersey distribution is right-skewed.

• The distribution for Indiana has a similar center to the distribution for New Jersey, around $45,000.

• The variability for Indiana is less than the variability for New Jersey.

• $125,000 appears to be an outlier for the Indiana distribution and there isn't any obvious outliers for the New Jersey distribution.

How many students received a score of 94%? 

• 94

• 4

• 1

• 2

What is the highest score in the class?

• 88%

• 100%

• 13

• 98%