Green Bridge Learning Resource Nchekwa Maka Correlation And Line Of Best Fit

Gbogbo ọrọ náà

When two quantities are plotted against each other, the pattern of points often tells a story: as one goes up, does the other go up, go down, or do neither? That pattern is correlation, and a line of best fit captures the trend.

In this lesson you will describe the correlation shown by a scatter plot as positive, negative or none, draw a line of best fit, and use it to make predictions.

Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Correlation And Line Of Best Fit. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

Points trending upward from bottom left to top right show: A. negative correlation B. positive correlation C. no correlation D. causation Answer: B
Points trending downward from top left to bottom right show: A. positive correlation B. negative correlation C. no correlation D. zero range Answer: B
Scattered points with no clear pattern show: A. positive correlation B. negative correlation C. no correlation D. strong correlation Answer: C
A line of best fit should have: A. all points above it B. all points below it C. roughly equal points above and below D. only two points on it Answer: C
Correlation between two variables: A. always proves causation B. never exists C. does not by itself prove causation D. is the same as the range Answer: C