Stats Vocab
Conditions for Slope Inference
Computer Output
Finding LSRL
Finding T
100
A random portion of a population is used for testing and sampling.
What is a Simple Random Sample?
100
A histogram of residuals should be approximately this to pass the conditions
What is Normal?
100
233.517 on computer output
What is the slope of the line(b)?
100
LSRL:?
Height Armspan
174 165
168 175
155 155
189 188
183 184.3
184 184
What is ŷ=9.22+0.946x
100
b=6.5
SE=1.3
What is t=3.5?
200
Refers to the probability of populations falling between values.
What is a confidence interval?
200
Data is coming from a randomized experiment or sample.
What is Random?
200
4.316 on computer output
What is the standard deviation of the slope?
200
LSRL:?
Height Weight
177 132
180 150
146 100
177 143
163 120
175 131
180 156
What is ŷ=-110.186+1.42x
200
b=0.164
SE=0.057
What is t=2.862?
300
The standard deviation of a sample population.
What is the standard error?
300
Individual observations with replacement or 10% rule.
What is Independent?
300
54.11 on computer output
What is the t-value?
300
LSRL:?
Height Armspan
187 182
172 168
184 177
161 161
172 170
173 174
166 174
ŷ=15.067+0.891x
300
b=0.2
SE=0.579
What is t=0.345?
400
The differences between the predicted and expected values.
What are residuals?
400
There is a ______ relationship between x and y.
What is Linear?
400
Bottom 0.000 on computer output?
What is the p-value?
400
LSRL:?
Height Armspan
189 188
179.5 179
171 172
166 167
174 184
169 165
171 168
ŷ=-19.54+1.12x
400
b=0.9043
SE=0.6678
What is t=1.354?
500
It is used in hypothesis testing to help decide whether or not we reject the null hypothesis.
What is a p-value?
500
The standard deviation of y is the same for all values of x.
What is Equal SD?
500
33.43 on computer output
What is the standard deviation of the residuals?
500
LSRL:?
Height Armspan
163 169
162 164
183 185
171 173
177 180
186 180
175 171
190 185
ŷ=53.702+0.69x
500
b=0.345
SE=0.274
What is t=1.29?