full transcript
#### From the Ted Talk by Lea Gaslowitz: How to spot a misleading graph

## Unscramble the Blue Letters

A toothpaste brand claims their product will destroy more plaque than any product ever made. A politician tells you their plan will create the most jobs. We're so used to hearing these kndis of eeraogxnagits in advertising and politics that we might not even bat an eye. But what about when the claim is accompanied by a graph? Afterall, a graph isn't an oopinin. It represents cold, hard numbers, and who can aruge with those? Yet, as it turns out, there are plenty of ways graphs can mislead and otruight manipulate. Here are some things to look out for. In this 1992 ad, Chevy claimed to make the most reliable trukcs in aicrema using this graph. Not only does it show that 98% of all Chevy trucks sold in the last ten years are still on the road, but it looks like they're twice as dependable as toytoa trucks. That is, until you take a closer look at the numbers on the left and see that the figure for Toyota is about 96.5%. The scale only goes between 95 and 100%. If it went from 0 to 100, it would look like this. This is one of the most common ways graphs misrepresent data, by distorting the salce. zoinmog in on a small portion of the y-axis exaggerates a barely detectable difference between the things being cmaepord. And it's especially misleading with bar graphs since we assume the difference in the size of the bars is proportional to the values. But the scale can also be distorted along the x-axis, usually in line graphs showing something changing over time. This chart showing the rise in amreican unemployment from 2008 to 2010 mtleiaupans the x-axis in two ways. First of all, the scale is inconsistent, compressing the 15-month span after March 2009 to look sortehr than the preceding six months. Using more consistent data points gives a different picture with job losses tapering off by the end of 2009. And if you wonder why they were innrciaseg in the first place, the timeline starts imtdmeeilay after the U.S.'s biggest fnanciail cllaopse since the gaert Depression. These techniques are known as cherry picking. A time range can be carefully cehson to exclude the impact of a major event right outside it. And picking specific data points can hide important changes in between. Even when there's nothing wrong with the graph itself, leaving out relevant data can give a misleading impression. This chart of how many pelope watch the seupr Bowl each year makes it look like the event's popularity is exinpdolg. But it's not accounting for population growth. The ratings have actually held staedy because while the number of football fans has isecerand, their sahre of overall viewership has not. Finally, a graph can't tell you much if you don't know the full significance of what's being presented. Both of the following graphs use the same ocean temperature data from the National Centers for Environmental iooimrnaftn. So why do they seem to give opposite impressions? The first gparh plots the aavrgee annual ocean temperature from 1880 to 2016, making the change look insignificant. But in fact, a rise of even half a degree Celsius can cause massive ecological disruption. This is why the second graph, which show the average temperature variation each year, is far more significant. When they're used well, garhps can help us intuitively grasp complex data. But as visual software has enabled more usage of graphs throughout all media, it's also made them easier to use in a careless or dishonest way. So the next time you see a graph, don't be swayed by the lines and curves. Look at the llbeas, the numbers, the scale, and the cteonxt, and ask what sorty the picture is trying to tell.
## Open Cloze

A toothpaste brand claims their product will destroy more plaque than any product ever made. A politician tells you their plan will create the most jobs. We're so used to hearing these **_____** of **_____________** in advertising and politics that we might not even bat an eye. But what about when the claim is accompanied by a graph? Afterall, a graph isn't an **_______**. It represents cold, hard numbers, and who can **_____** with those? Yet, as it turns out, there are plenty of ways graphs can mislead and **________** manipulate. Here are some things to look out for. In this 1992 ad, Chevy claimed to make the most reliable **______** in **_______** using this graph. Not only does it show that 98% of all Chevy trucks sold in the last ten years are still on the road, but it looks like they're twice as dependable as **______** trucks. That is, until you take a closer look at the numbers on the left and see that the figure for Toyota is about 96.5%. The scale only goes between 95 and 100%. If it went from 0 to 100, it would look like this. This is one of the most common ways graphs misrepresent data, by distorting the **_____**. **_______** in on a small portion of the y-axis exaggerates a barely detectable difference between the things being **________**. And it's especially misleading with bar graphs since we assume the difference in the size of the bars is proportional to the values. But the scale can also be distorted along the x-axis, usually in line graphs showing something changing over time. This chart showing the rise in **________** unemployment from 2008 to 2010 **___________** the x-axis in two ways. First of all, the scale is inconsistent, compressing the 15-month span after March 2009 to look **_______** than the preceding six months. Using more consistent data points gives a different picture with job losses tapering off by the end of 2009. And if you wonder why they were **__________** in the first place, the timeline starts **___________** after the U.S.'s biggest **_________** **________** since the **_____** Depression. These techniques are known as cherry picking. A time range can be carefully **______** to exclude the impact of a major event right outside it. And picking specific data points can hide important changes in between. Even when there's nothing wrong with the graph itself, leaving out relevant data can give a misleading impression. This chart of how many **______** watch the **_____** Bowl each year makes it look like the event's popularity is **_________**. But it's not accounting for population growth. The ratings have actually held **______** because while the number of football fans has **_________**, their **_____** of overall viewership has not. Finally, a graph can't tell you much if you don't know the full significance of what's being presented. Both of the following graphs use the same ocean temperature data from the National Centers for Environmental **___________**. So why do they seem to give opposite impressions? The first **_____** plots the **_______** annual ocean temperature from 1880 to 2016, making the change look insignificant. But in fact, a rise of even half a degree Celsius can cause massive ecological disruption. This is why the second graph, which show the average temperature variation each year, is far more significant. When they're used well, **______** can help us intuitively grasp complex data. But as visual software has enabled more usage of graphs throughout all media, it's also made them easier to use in a careless or dishonest way. So the next time you see a graph, don't be swayed by the lines and curves. Look at the **______**, the numbers, the scale, and the **_______**, and ask what **_____** the picture is trying to tell.
## Solution

- exaggerations
- immediately
- exploding
- manipulates
- story
- chosen
- argue
- increased
- opinion
- trucks
- context
- super
- kinds
- steady
- financial
- average
- zooming
- great
- collapse
- graphs
- scale
- information
- people
- graph
- shorter
- america
- labels
- toyota
- increasing
- outright
- american
- share
- compared

## Original Text

A toothpaste brand claims their product will destroy more plaque than any product ever made. A politician tells you their plan will create the most jobs. We're so used to hearing these kinds of exaggerations in advertising and politics that we might not even bat an eye. But what about when the claim is accompanied by a graph? Afterall, a graph isn't an opinion. It represents cold, hard numbers, and who can argue with those? Yet, as it turns out, there are plenty of ways graphs can mislead and outright manipulate. Here are some things to look out for. In this 1992 ad, Chevy claimed to make the most reliable trucks in America using this graph. Not only does it show that 98% of all Chevy trucks sold in the last ten years are still on the road, but it looks like they're twice as dependable as Toyota trucks. That is, until you take a closer look at the numbers on the left and see that the figure for Toyota is about 96.5%. The scale only goes between 95 and 100%. If it went from 0 to 100, it would look like this. This is one of the most common ways graphs misrepresent data, by distorting the scale. Zooming in on a small portion of the y-axis exaggerates a barely detectable difference between the things being compared. And it's especially misleading with bar graphs since we assume the difference in the size of the bars is proportional to the values. But the scale can also be distorted along the x-axis, usually in line graphs showing something changing over time. This chart showing the rise in American unemployment from 2008 to 2010 manipulates the x-axis in two ways. First of all, the scale is inconsistent, compressing the 15-month span after March 2009 to look shorter than the preceding six months. Using more consistent data points gives a different picture with job losses tapering off by the end of 2009. And if you wonder why they were increasing in the first place, the timeline starts immediately after the U.S.'s biggest financial collapse since the Great Depression. These techniques are known as cherry picking. A time range can be carefully chosen to exclude the impact of a major event right outside it. And picking specific data points can hide important changes in between. Even when there's nothing wrong with the graph itself, leaving out relevant data can give a misleading impression. This chart of how many people watch the Super Bowl each year makes it look like the event's popularity is exploding. But it's not accounting for population growth. The ratings have actually held steady because while the number of football fans has increased, their share of overall viewership has not. Finally, a graph can't tell you much if you don't know the full significance of what's being presented. Both of the following graphs use the same ocean temperature data from the National Centers for Environmental Information. So why do they seem to give opposite impressions? The first graph plots the average annual ocean temperature from 1880 to 2016, making the change look insignificant. But in fact, a rise of even half a degree Celsius can cause massive ecological disruption. This is why the second graph, which show the average temperature variation each year, is far more significant. When they're used well, graphs can help us intuitively grasp complex data. But as visual software has enabled more usage of graphs throughout all media, it's also made them easier to use in a careless or dishonest way. So the next time you see a graph, don't be swayed by the lines and curves. Look at the labels, the numbers, the scale, and the context, and ask what story the picture is trying to tell.
## Frequently Occurring Word Combinations

### ngrams of length 2

collocation |
frequency |

ways graphs |
2 |

data points |
2 |

ocean temperature |
2 |

## Important Words

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