1. The students in a seaside school will have to take extra swimming lessons if they cannot swim. The table below gives information about the students in grades 7, 8 and 9. Can swim Cannot Total swim 60 Grade 7 120 180 179 Grade 8 168 11 Grade 9 172 3. 175 534 Total 79 a. Complete the table. 74 b. How many students need swimming lessons?, c. How many students are there in 8th grade? 179 d. How many of the 7th grade students cannot swim? (00 e. How many students in grades 7 and 8 can swim? 289 534 32 f. How many students are there altogether in grades 7, 8, and 9? g. What is the probability that a student is a 7th grader? h. What is the probability that a student is an 8th grader and can swim to all 8th graders? i. What is the probability that a student cannot swim? 14
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
