What is data primarily used for in various fields like education and healthcare?

To understand patterns, make decisions, and plan for the future.

Which of the following tools is NOT commonly used to represent data? A) Tally Marks B) Pictographs C) Venn Diagrams D) Bar Graphs

C) Venn Diagrams

True or False: Tally marks represent data by using vertical lines with a crossbar for groups of five.

True

Riddle: I can represent data visually, using symbols that stand for numbers. What am I?

Pictograph

The arithmetic mean is calculated by taking the sum of all data values and dividing it by the ______.

Total number of observations

How do you identify the median in a data set when the number of observations is even?

Calculate the average of the two middle values.

Which graphical representation uses rectangular bars to show data? A) Tally Chart B) Bar Graph C) Line Graph D) Histogram

B) Bar Graph

Fill in the blank: Organizing data involves arranging it clearly, often using ______ or tally marks.

Tables

True or False: The mode is the value that appears most frequently in a data set.

True

Riddle: I stand tall and straight, my height shows the number of occurrences. What am I?

Bar in a Bar Graph

How can data be organized for easier analysis?

By grouping similar data together and using tables or tally marks.

What is the first step in collecting data?

Identify what information you need.

Multiple Choice: Which of the following is a central value that represents the center of a data set? A) Range B) Mean C) Total D) Frequency

B) Mean

Fill in the blank: A ______ uses pictures or symbols to represent data.

Pictograph

True or False: Bar graphs can have bars of different widths.

False. All bars have the same width for consistency.

What does each symbol in a pictograph represent?

A specific number, explained in a key.

Which measure of central tendency is not affected by extreme values? A) Mean B) Median C) Mode D) Average

B) Median

Riddle: I am the value in the middle of a sorted list, unaffected by outliers. What am I?

Median

How do you represent data using tally marks?

Each unit is shown by ‘|’ and a group of five is shown with a crossbar.

Fill in the blank: In a bar graph, equal spacing between bars makes the graph ______.

Clear