用R探索数据 [英] Exploring Data With R

问题描述

大家好

我正在Microsoft/edx上数据科学课程，但我无法继续进行实验室练习.在指令中，它说我正在使用R时，在最后一个单元格中添加以下代码:

I at the middle of taking Data Science course at Microsoft/edx but I couldn't be able to continue with my lab exercise. At the instruction, it says add the following code in the last cell, while i was using R:

#打印温度和销售量统计信息
summary(dat [c('Temperature'，'Sales')])
print('标准偏差:')
apply(dat [c('Temperature'，'Sales')]，2，sd)

#打印温度与销售量的相关性
print('Correlation:')
cor(dat [c('Temperature'，'Sales')]))

#地块温度与销售额的关系
plot(dat $ Temperature，dat $ Sales，xlab ="Temperature"，ylab ="Sales") 

# Print statistics for Temperature and Sales
summary(dat[c('Temperature', 'Sales')])
print('Standard Deviations:')
apply(dat[c('Temperature', 'Sales')],2,sd)

# Print correlation for temperature vs Sales
print('Correlation:')
cor(dat[c('Temperature', 'Sales')])

# Plot Temperature vs Sales
plot(dat$Temperature, dat$Sales, xlab="Temperature", ylab="Sales") 

但是我最终得到了表明此内容的错误代码，

But I ended up getting error code that says this,

Error in summary(dat[c("Temperature", "Sales")]): object 'dat' not found
Traceback:

1. summary(dat[c("Temperature", "Sales")])

请帮助我继续我的课程.

Please help me to proceed with my course.

谢谢.

推荐答案

您可以检查输入数据集的名称吗?

Could you check the name of the input dataset? 

此问题似乎与此线程非常相似:https://social.msdn.microsoft.com/Forums/azure/en-US/952f5400-a6ef-4fd2-8d18-a5001a7f22a5/exploring-data- with-r?forum = MachineLearning

This issue seems to be very similar to this thread: https://social.msdn.microsoft.com/Forums/azure/en-US/952f5400-a6ef-4fd2-8d18-a5001a7f22a5/exploring-data-with-r?forum=MachineLearning

此致，
Jaya

Regards,
Jaya

这篇关于用R探索数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！