Welcome to your GRADE 7 MATHEMATICS CHAPTER 7
After carefully reading the following 30 questions, choose the correct answer.
1.
What is the term for numerical values or facts collected for a specific purpose?
2.
In a bar graph, what does the height or length of each bar represent?
3.
Which type of chart uses slices to show the proportion of each category relative to the whole?
4.
To calculate the mean of a data set, you divide the sum of all data values by:
5.
According to Definition 7.5, what is the mode of a list of data?
6.
What is the mode of the following data: 20, 30, 40, 20, 20, 30, 50?
7.
If a data set is 12, 14, 12, 14, 13, 14, 12, how many modes does it have?
8.
What is the mode for the data: 21, 78, 90, 40, 20, 10, 15, 25, 35?
9.
When organizing data, what is the first step in creating a frequency table?
10.
In a tally system, how is a frequency of five usually represented?
11.
If data is arranged from smallest to largest, the middle value is called the:
12.
What is the range of a data set?
13.
To find the median of the data set {2, 7, 3, 9, 1}, what must you do first?
14.
A frequency distribution table is primarily used to:
15.
Which of these is a major component of Unit 7?
16.
What tool is used to interpret trends in data over time?
17.
If the data values are 25, 28, 50, 60, 70, 50, 60, 70, 90, how many modes are there?
18.
What is the mean of the numbers 10, 20, and 30?
19.
If a data set has an even number of values, how is the median found?
20.
Which section of Unit 7 covers Pie charts?
21.
What is the total angle sum in a pie chart?
22.
Data that is not organized is often called:
23.
In a frequency table, the 'Frequency' column shows:
24.
Which value is most affected by extremely high or low numbers (outliers)?
25.
If the range of a data set is 0, what does it imply?
26.
What is the median of {1, 3, 5}?
27.
Section 7.2.1 of the textbook discusses:
28.
How is the range calculated for the set {10, 2, 35, 12}?
29.
A "unimodal" data set has how many modes?
30.
In a bar graph, the bars should be:
