Flashcards in Data Handling Deck (23):

1

## What is measurement data?

### Measurement data is data obtained by measuring with some form of instrument.

2

## What are examples of counting data?

### People, fish, objects, shoes...

3

## What are examples of measurement data?

### Height, rainfall, length, weight, waist, distance...

4

## What is discrete data?

###
Counting data.

Natural numbers.

5

## What is continuous data?

###
Measurement data.

Rational numbers: decimals & fractions

6

## What is counting data?

### Counting data is the data obtained by counting how many of a particular type of object there is.

7

## What is quantitative data?

### Data that has quantity, i.e. an amount.

7

## What is ranked data?

### It is data that has been sorted from the lowest value to the highest value, i.e. ascending order.

8

## What are measures of central tendency?

### They are values around which the data falls.

9

## What is an average?

### An average is a number that describes (or typifies) a data set.

11

## What is the symbol for mean?

### An x bar

12

## What is the symbol for median?

### A capital M, or the second quartile.

13

## What is the symbol for mode?

### The is no symbol.

14

## What is the mean?

###
The mean is when you add all the values together, and divide them by the number of values.

15

## What is the median?

### It is the number which is halfway through an ordered set of data.

16

## What is the mode?

### It is the value that appears the most in a data set.

17

## What is range?

### It is the maximum value minus the minimum value.

18

## What are the three averages used for data handling?

### Mean, median and mode.

19

## What kind of data is used in histograms?

### Measurement (continuous data)

20

## What is a histogram?

###
A histogram contains continuous data, and THE BARS MUST TOUCH.

The widths of class intervals must always be the same.

21

## What is a class interval?

### It is a way of classifying large amounts of data.

22

## What is the formula for mean?

###

Σx

n

23