Chay SPSS thue mot so kiem dinh thuong dung trong phan tich thong ke

Trong bai viet nay,Luan Van Viet se chia se den ban mot so kiem dinh thuong dung trong phan tich thong ke. Trong truong hop ban khong the tu lam hoac khong co thoi gian lam, hay tham khao dich vu chay SPSS thue</strong> cua Luan Van Viet</strong>.

Trong phan tich thong ke moi quan he cua cac hien tuong kinh te xa hoi, nguoi ta thuong su dung cac ky thuat kiem dinh so lieu de dua ra cac quyet dinh. Mot so kiem dinh ve gia tri trung binh rat hay duoc su dung se duoc gioi thieu.

chay spss thue 

1. Phuong phap chung de kiem dinh so lieu thong ke

Bao gom cac buoc sau:

- Lap gia thuyet H0 va can cu vao yeu cau thuc te lap gia thuyet doi H1;

- Chon muc y nghia a;

- Lay mot mau so lieu kich thuoc N tu tong the nghien cuu;

- Chon tieu chuan kiem dinh G va xac dinh quy luat phan bo xac suat cua no voi dieu kien gia thuyet H0 dung;

- Xac dinh gia tri ly thuyet cua thong ke G: Gcrit;

- Can cu vao mau so lieu da thu thap, tinh toan gia tri quan sat cua tieu chuan kiem dinh G: Gqs;

- So sanh gia tri Gqs voi Gcrit de rut ra ket luan.

2. Kiem dinh so trung binh cua mot tong the

Nguoi ta dung phuong phap kiem dinh ve so trung binh cua mot tong the nham so sanh gia tri trung binh cua tong the voi mot gia tri cu the. Tong the duoc gia thiet co phan phoi chuan.

Thi du: Ta cho rang lam mot luan an tien si thuong mat 4 nam. Dua tren so lieu cuoc dieu tra tien si nam 2000, hay kiem dinh xem co phai nhu vay khong.

Nhung dieu can biet ve hien tuong da cong tuyen 

Ket qua kiem dinh (T = - 5.681, P-value =.000), ta bac bo gia thuyet khong cho rang thoi gian lam mot luan an tien si la 4 nam. Day la mot kiem dinh trai cho biet thoi gian lam mot luan an thuc su it hon 4 nam.

Neu ban gap kho khan trong qua trinh xu ly du lieu trong SPSS, hay tham khaodich vu chay SPSS thue</strong> cua Luan Van Viet</strong> nhe.

3. Kiem dinh ve su khac nhau cua hai so trung binh: Truong hop hai mau doc lap

Muc dich cua kiem dinh ve su khac nhau cua hai so trung binh nham so sanh 2 gia tri trung binh cua tong the. Gia su hai tong the deu co phan phoi chuan.

Thi du: Dieu kien de lam mot luan an tien sy trong nuoc thuong kho khan ve nhieu mat so voi o nuoc ngoai. Vi vay thoi gian de lam mot luan an co the khac nhau. Dung so lieu cuoc dieu tra tien sy nam 2000 kiem dinh.

Ket qua (T = 3.915, P-value =.000), ta bac bo gia thuyet khong cho rang thoi gian lam mot luan an tien sy o trong nuoc va nuoc ngoai la bang nhau. Day la mot kiem dinh phai cho biet thoi gian lam trong nuoc la lau hon ngoai nuoc.

4. Kiem dinh ve su khac nhau cua hai so trung binh: Truong hop hai mau cap nhau

Ta van phai so sanh hai so trung binh, nhung trong truong hop hai mau rut ra tu hai tong the lai phu thuoc nhau tren tung cap gia tri va cung co kich thuoc N. Hai tong the deu co phan phoi chuan.

Thi du: Nhieu tien si cho rang ho qua ban voi cong tac quan ly, thoi gian danh cho nghien cuu khong duoc nhieu. Vay thoi gian su dung cho nghien cuu co thuc su it hon cho quan ly hay khong?

Thong ke T tu kiem dinh (T = 8.420, P-value =.000) da bac bo gia thuyet khong ve su bang nhau cua hai thoi gian. Day la mot kiem dinh phai thoi gian quan ly thuc su nhieu hon thoi gian nghien cuu.

Neu ban qua ban ron va khong co thoi gian, hay tham khao dich vu </strong>chay SPSS thue cua Luan Van Viet. Voi kinh nghiem hoat dong hon 15 nam trong linh vuc nay cung voi doi ngu chuyen vien trinh do cao, Luan Van Viet chac chan se mang den cho ban san pham hoan hao nhat.

xem them:https://luanvanvietblog.wordpress.com/2019/03/22/dich-vu-xu-ly-so-lieu-spss-chay-eviews-stata-tai-luan-van-viet/